For a versatile starting point, GS Plant Foods Liquid Humic Acid Soil Amendment stands out as the best overall pick, while The Andersons Humic DG suits larger lawn applications and Wallace Organic Wonder DS-80 offers a concentrated soluble powder format. The best humic acid fertilizers differ most in form, coverage, and ease of application, not simply in whether they contain humic material. Granules can be practical for broad soil treatment, while liquids and powders suit mixing, spot work, or smaller gardens. Some products also include nutrients or seaweed, so check whether you want a humic amendment alone or a multi-purpose lawn product. Read on for the full breakdown and a guide to matching the format to your soil and application routine.
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Key Takeaways
- Liquid concentrates offer the widest range of use: GS Plant Foods and the larger Bloom City and FoliarTech containers are easier to adapt to different garden and lawn routines than products designed mainly for dry spreading.
- The Andersons Humic DG is the large-area option: Its 40-pound granular format is better suited to treating substantial lawn space than small liquid bottles or one-pound powders.
- Powder format favors compact storage and mixing: Wallace Organic Wonder DS-80 gives buyers a dry soluble option, but it requires preparation rather than direct liquid application.
- Not every lawn product is a humic amendment alone: Simple Lawn Solutions 15-0-15 adds fertilizer nutrients, which may suit a feeding plan but is a different choice from a humic-only soil conditioner.
- Container size changes convenience as much as quantity: Bloom City comes in several sizes, letting buyers choose between a small trial container and larger-volume use without changing product type.
| humic acid fertilizer | Brand | Form | Volume | Mixing ratio |
|---|---|---|---|---|
| FoliarTech Organic Humic Acid | FoliarTech | Liquid | 1.1 gallons (135.26 fluid ounces) | — |
| Down To Earth Organic Granular | Down To Earth All Natural Fertilizers | Granules | — | — |
| Humic Acid Fertilizer and Soil | PowerGrow Systems | Granules | — | 1:1; further instructions not provided |
| Bloom City Humic Acid Liquid S | Bloom City | Liquid | 8 fluid ounces | 1:5120 |
| Bloom City Humic Acid Liquid S | Bloom City | Liquid | 128 fluid ounces (1 gallon) | — |
| The Andersons Humic DG Organic | The Andersons | Granules | — | — |
| Wallace Organic Wonder DS-80 S | Wallace Organic Wonder | Water-soluble powder | — | 0.5 teaspoons per gallon of water |
| Simple Lawn Solutions Soil Hum | Simple Lawn Solutions | Liquid | 32 fluid ounces | 1:100 |
| Simple Lawn Solutions 15-0-15 | Simple Lawn Solutions | — | 32 fluid ounces (1 quart) | — |
| GS Plant Foods Liquid Humic Ac | GS Plant Foods | Liquid | 1 gallon (128 fluid ounces) | 1:64 |
| Farmer’s Secret Organic Soil R | Farmer’s Secret | Liquid | 32 fluid ounces | 1 oz per gallon (1:128) |
| Farm Made Organics Humic+ Liqu | Farm Made Organics Co. | Liquid | 32 fluid ounces | — |
| Bloom City Humic Acid Liquid S | Bloom City | Liquid | 32 fluid ounces | 1:1000 |
| GS Plant Foods Humic Acid Soil | GS Plant Foods | Liquid | 32 fluid ounces | 2:128 |
| PowerGrow Systems Humic Acid F | PowerGrow Systems | Powder | — | — |
More Details on Our Top Picks
FoliarTech Organic Humic Acid Soil Conditioner, 1.1 Gallons
FoliarTech’s main advantage is application flexibility: this OMRI-certified concentrate can be used as a soil drench or foliar spray, making it a fit for gardeners who treat different plants in different ways. Its Humalite source and water-soluble form also suit sprayer-based routines, and the product data lists use across lawns, gardens, and indoor or outdoor plants. Compared with Down To Earth Organic Granular Humic Acids, this liquid is easier to distribute through spray equipment but lacks that product’s stated 50% humic-acid concentration. The large container is intended for broad coverage, though the listed target species are lawn grasses, which makes the wider-use claims less specific. Mixing directions are on the bottle label, so buyers who want a dilution rate upfront may prefer a product with clearer listed instructions.
Pros:- OMRI-certified and made from Humalite sourced from Alberta, Canada
- Can be applied as either a soil drench or foliar spray
- Water-soluble form suits sprayers and listed hydroponic use
- Large-volume format is specified for broad spray or irrigation coverage
Cons:- The mixing ratio is supplied on the bottle label rather than in the provided product data
- Lawn grasses are the listed target species despite broader lawn and garden use claims
- The product data does not state a humic-acid percentage for comparison with concentrated granular options
Best for: Gardeners and lawn owners who want one water-soluble humic concentrate for both foliar spraying and soil drenching.
Not ideal for: Buyers who need a clearly stated humic-acid percentage or a mixing rate before purchasing, or who want product data specifically centered on garden crops.
- Brand:FoliarTech
- Form:Liquid
- Volume:1.1 gallons (135.26 fluid ounces)
- Application methods:Soil drench or foliar spray
- Coverage:Listed for 1 acre / 0.4 ha / 43,500 sq ft spray; 2,000 L water irrigation
- Certification:OMRI-certified
- Source material:Humalite from Alberta, Canada
- Target species:Lawn grasses
Our verdict“Choose FoliarTech if you want an OMRI-certified liquid that works with both spray and drench routines, and skip it if you need concentration and dilution details upfront.”
Down To Earth Organic Granular Humic Acids, 5 lb
Down To Earth is the clearest pick for buyers prioritizing a stated humic-acid concentration: the granules contain 50% humic acids and are OMRI-listed for organic production. That makes the product easier to compare on composition than PowerGrow Systems Humic Acid Fertilizer and Soil Conditioner, whose provided data does not specify a percentage. Its 1–3 mm granules are suited to soil amendment across lawns, turf, fields, and vegetable gardens, so it fits broader ground-level use better than a small liquid such as Bloom City’s 8-ounce conditioner. The tradeoff is that granules are not a foliar spray or an all-in-one fertilizer; they are meant to amend soil, and any effect on nutrient uptake or microbial life is described as potential rather than guaranteed. Buyers wanting a ready-to-dilute liquid should choose another format.
Pros:- Contains a stated 50% humic acids
- OMRI-listed for use in organic production
- Granules suit soil amendment across fields, turf, lawns, and vegetable gardens
- Small 1–3 mm granules are sized for spreading into soil
Cons:- Not a complete fertilizer and does not replace a nutrient-specific feeding program
- Granular form is less suited than liquid concentrates to foliar application
- Potential benefits to nutrient uptake and soil microbial life are not guaranteed results
Best for: Organic gardeners and turf managers who want a granular soil amendment with a specified humic-acid percentage for ground-level application.
Not ideal for: Growers who need a foliar product, a liquid compatible with spray equipment, or a complete fertilizer supplying listed nutrients.
- Brand:Down To Earth All Natural Fertilizers
- Form:Granules
- Item weight:5 pounds
- Granule size:1–3 mm
- Total humic acids:50%
- OMRI listing:Yes, for use in organic production
- Target areas:Fields, turf, lawns, and vegetable gardens
- Pack count:1
Our verdict“Pick Down To Earth when a specified humic-acid concentration and organic-listed granules matter more than spray convenience or complete nutrition.”
Humic Acid Fertilizer and Soil Conditioner, 10 lb
This 10-pound granular option favors gardeners who want a substantial amount for scatter application rather than a small liquid concentrate. The product description points to possible benefits for nutrient uptake, microbial activity, water retention, root health, and seed germination, giving it a broad soil-conditioning brief. Compared with the 5-pound Down To Earth Organic Granular Humic Acids, it offers twice the listed weight, but Down To Earth provides a useful 50% humic-acid figure and OMRI listing that are absent from this product’s supplied data. The screened small particles are intended for garden use, yet the application instructions leave questions: a 1:1 mixing ratio is listed without explaining what is being mixed or how much to apply. I’d favor it for buyers comfortable following minimal directions, not first-time users seeking a precise schedule.
Pros:- 10-pound pack provides more product than the listed 5-pound Down To Earth option
- Granular form is intended for scatter application
- Small screened particles are designed for garden use
- Product description identifies possible support for water retention and soil microbial activity
Cons:- The listed 1:1 mixing ratio lacks instructions about the materials or quantities involved
- No humic-acid percentage is supplied for comparison with Down To Earth’s stated 50%
- The provided data does not list an organic certification
Best for: Gardeners treating larger beds who prefer a granular product that can be scattered and do not need a fully specified application schedule.
Not ideal for: New gardeners who need clear rates and mixing directions, or organic-production buyers who require a stated certification in the product data.
- Brand:PowerGrow Systems
- Form:Granules
- Weight:10 pounds
- Pack count:1
- Application method:Scatter
- Mixing ratio:1:1; further instructions not provided
- Target species:Plants
Our verdict“Choose this larger granular pack for garden beds if you can work around sparse directions, but select Down To Earth for clearer concentration and organic-listing information.”
Bloom City Humic Acid Liquid Soil Conditioner, 8 oz
Bloom City’s 8-ounce bottle suits small-scale soil care where a bulky container would be awkward, such as indoor plants or a few garden beds. Its listed 1:5120 mixing ratio signals a highly diluted application, and the product is intended to support soil structure, root strength, nutrient uptake, and water retention, including in compacted clay. Unlike FoliarTech Organic Humic Acid Soil Conditioner, which lists both foliar spray and soil-drench methods, this product data describes soil conditioning without specifying a foliar route. It is also a more compact starting point than Bloom City’s 1-gallon version, but the coverage figures supplied apply to 32- and 128-ounce quantities—not this 8-ounce package. That makes it hard to estimate coverage from the provided data, and buyers must dilute it before use.
Pros:- Compact 8-ounce format is suited to small plant collections and limited storage
- Listed 1:5120 mixing ratio supports highly diluted use
- Designed for indoor plants, gardens, and lawns
- Product description targets compacted clay, root strength, and soil water retention
Cons:- Requires dilution before application
- Coverage information is given for 32- and 128-ounce sizes, not this 8-ounce bottle
- Product data does not specify foliar application as FoliarTech does
Best for: Indoor plant owners and small-garden growers who want a compact liquid conditioner for soil and do not need a coverage estimate before buying.
Not ideal for: Lawn owners treating a large area, or buyers who want ready-to-use product or package-specific coverage figures.
- Brand:Bloom City
- Form:Liquid
- Volume:8 fluid ounces
- Uses:Plant growth and soil conditioning
- Target species:Indoor plants, gardens, and lawns
- Mixing ratio:1:5120
- Made in:USA
Our verdict“Choose this compact Bloom City bottle for small-scale soil conditioning, but pick the gallon size or FoliarTech for broader treatment plans and clearer application-format options.”
Bloom City Humic Acid Liquid Soil Conditioner for Lawns and Gardens, 1 Gallon
The gallon size is the practical draw here: Bloom City offers a large liquid supply for recurring lawn and garden soil-conditioning routines, with the product described as supporting root strength, nutrient availability, and water retention while helping loosen compacted clay. Compared with the 8-ounce Bloom City Humic Acid Liquid Soil Conditioner, this package is better suited to treating more ground over time, but its product data does not provide the smaller bottle’s 1:5120 mixing ratio. That missing dilution guidance makes planning less straightforward. It also has a narrower stated focus than FoliarTech Organic Humic Acid Soil Conditioner, which lists foliar spray as well as soil drench application. Bloom City’s gallon is positioned for lawns and gardens and can fit alongside regular lawn care, but buyers should confirm the application rate on the product label before use.
Pros:- Gallon volume suits repeated use across lawns and gardens
- Designed to fit alongside regular lawn care routines
- Product description targets compacted clay, root strength, and nutrient availability
- Liquid format can be easier to distribute across ground than granular amendments
Cons:- Mixing ratio is not provided in the supplied product data
- Intended use is stated for lawns and gardens rather than indoor plants
- Does not list foliar application options as FoliarTech does
Best for: Homeowners and gardeners who want a gallon-format liquid conditioner for ongoing lawn and garden soil care.
Not ideal for: Buyers who need a listed mixing ratio before purchase, want a compact bottle for a few indoor plants, or require stated foliar-spray directions.
- Brand:Bloom City
- Form:Liquid
- Volume:128 fluid ounces (1 gallon)
- Weight:8 pounds
- Intended use:Lawns and gardens
- Made in:USA
- Part number:BHUMIC1G
Our verdict“Choose the gallon Bloom City conditioner for ongoing lawn and garden use if you can check its label for dilution directions; choose the 8-ounce version for a smaller-scale purchase.”
The Andersons Humic DG Organic Soil Amendment, 40 lb
For buyers treating a broad lawn or planting area, The Andersons Humic DG pairs a granular format with 70% humic content and coverage up to 40,000 square feet. That makes it a more practical fit for large-area soil work than Wallace Organic Wonder DS-80, which is mixed into water and applied in smaller, repeatable treatments. The granules can be used on their own or alongside a fertilizer program, while the OMRI listing may suit gardeners seeking an organic-listed amendment. Its stated benefits include support for soil microbes, nutrient absorption, germination, and root health—not a replacement for a fertilizer supplying plant nutrients. The tradeoff is the substantial 40-pound bag, which may be awkward for smaller gardens, and availability is restricted in South Dakota.
Pros:- 70% humic content
- Covers up to 40,000 square feet
- Granular format can be used alone or alongside fertilizer
- OMRI listed and intended to support soil microbes and root health
Cons:- A 40-pound bag may be cumbersome for small properties or limited storage
- Not for sale in South Dakota
- Provides soil-amendment support rather than a stated NPK nutrient analysis
Best for: Lawn owners and gardeners treating large areas who want a granular, OMRI-listed humic amendment to pair with an existing fertilizer plan.
Not ideal for: Small-space gardeners who prefer easy-to-measure liquid treatments, and buyers in South Dakota where the product is not for sale.
- Brand:The Andersons
- Form:Granules
- Weight:40 lb
- Coverage:Up to 40,000 sq ft
- Humic content:70%
- Listing:OMRI listed
- Target species:Plants
Our verdict“Choose The Andersons Humic DG for broad-area granular application; choose a soluble powder or liquid if you need smaller, water-mixed treatments.”
Wallace Organic Wonder DS-80 Soluble Humic and Fulvic Acid Powder, 1 lb
Wallace Organic Wonder DS-80 is the most adaptable choice here for gardeners who want to choose how the amendment reaches plants: the water-soluble powder can be mixed for soil drenching, foliar application, fertigation, or seed treatment. Its minimum 93% humic and fulvic acid content makes it a concentrated alternative to Simple Lawn Solutions Soil Hume, which combines humic acid with seaweed in a ready-to-dilute liquid. That flexibility comes with hands-on preparation: the stated rate is 0.5 teaspoons per gallon, and the suggested weekly schedule means repeated measuring and mixing. Buyers who prefer a pour-and-spray product may find GS Plant Foods Liquid Humic Acid simpler to handle. This powder makes more sense for growers already comfortable preparing solutions and using several application methods.
Pros:- Minimum 93% humic and fulvic acid content
- Completely water soluble
- Supports soil drench, foliar, fertigation, and seed-treatment uses
- Can be combined with many liquid fertilizers and micronutrients
Cons:- Must be measured and mixed before application
- Suggested weekly use creates recurring preparation work
- Application depends on having water and suitable spraying or irrigation equipment
Best for: Gardeners, greenhouse growers, and fertigation users who want one concentrated humic-and-fulvic powder for soil, foliage, or seed treatments.
Not ideal for: Busy homeowners seeking a ready-to-apply concentrate or anyone unwilling to measure and mix applications on a recurring schedule.
- Brand:Wallace Organic Wonder
- Form:Water-soluble powder
- Weight:1 lb (16 oz)
- Humic and fulvic acid content:Minimum 93%
- Mixing ratio:0.5 teaspoons per gallon of water
- Suggested frequency:Weekly
- Uses:Soil drench, foliar application, fertigation, and seed treatment
Our verdict“Pick DS-80 if you value concentrated, multi-method application and do not mind mixing; choose a liquid concentrate for simpler routine use.”
Simple Lawn Solutions Soil Hume Seaweed and Humic Acid Concentrate, 32 fl oz
Gardeners who want humic acid alongside a second soil-support ingredient may prefer Simple Lawn Solutions Soil Hume. Its blend combines 4.5% leonardite-derived humic acid with 4% Ascophyllum nodosum seaweed, giving it a different profile from The Andersons Humic DG, which emphasizes a high humic percentage in granular form. The liquid can be diluted at 1:100 and applied to lawns, gardens, or indoor plants with a sprayer or watering can, so it fits mixed planting spaces without requiring a dry spreader. It is still an amendment, not a complete feeding program: the product is intended to work alongside fertilizer. Compared with Wallace DS-80, it avoids dissolving powder but offers less application-method detail and requires dilution before use.
Pros:- Combines 4.5% humic acid with 4% seaweed
- Suitable for lawns, gardens, and indoor plants
- Can be applied with common sprayers or a watering can
- Dilutes at a stated 1:100 ratio
Cons:- Intended to supplement rather than replace a fertilizer program
- Humic acid concentration is lower than the high-content options in this lineup
- Requires dilution before application
Best for: Homeowners caring for lawns and mixed indoor or outdoor plants who want a diluted liquid humic-and-seaweed supplement alongside fertilizer.
Not ideal for: Buyers seeking a standalone fertilizer, a high-humic-content granular amendment, or a product with a stated foliar and fertigation schedule.
- Brand:Simple Lawn Solutions
- Form:Liquid
- Volume:32 fluid ounces
- Weight:2 pounds
- Seaweed content:4% Ascophyllum nodosum
- Humic acid content:4.5%, derived from leonardite
- Mixing ratio:1:100
- Application method:Spray or watering can
- Country of manufacture:United States
Our verdict“Choose Soil Hume for a convenient humic-and-seaweed supplement across varied plants, but pair it with a separate fertilizer.”
Simple Lawn Solutions 15-0-15 Liquid Lawn Fertilizer, 1 Quart
This is the lineup’s clearest fit for buyers who want plant nutrients as well as humic acid. Simple Lawn Solutions 15-0-15 supplies 15% nitrogen and 15% potassium, with no phosphorus, so it differs from Soil Hume, which is a humic-and-seaweed amendment intended to accompany fertilizer. That distinction matters: this product can contribute to lawn feeding while also including humic acid, but the listing still recommends using it alongside a fertilizer program. It suits several listed turf types and can also be applied to ornamentals and garden plants through common sprayers or a watering can. The tradeoff is that it is not a dedicated high-humic amendment, and the instructions call for sufficient watering to support nutrient absorption.
Pros:- Provides 15% nitrogen and 15% potassium with no phosphorus
- Contains humic acid, potash, and sulfur
- Works with hose-end, backpack, and pump sprayers or a watering can
- Listed for several turf grasses, ornamentals, and garden plants
Cons:- Not a dedicated high-concentration humic amendment
- Requires sufficient watering for nutrient absorption
- Listing recommends use alongside a fertilizer program
Best for: Lawn owners seeking a liquid nitrogen-and-potassium feed that includes humic acid and can also be used on listed garden plants.
Not ideal for: Buyers whose priority is a concentrated humic soil amendment without added nitrogen and potassium, or who need a phosphorus-containing fertilizer.
- Brand:Simple Lawn Solutions
- NPK ratio:15-0-15
- Volume:32 fluid ounces (1 quart)
- Nutrient content:15% nitrogen and 15% potassium
- Phosphorus:None
- Contains:Humic acid, potash, and sulfur
- Application:Hose-end sprayer, backpack sprayer, pump sprayer, or watering can
- Suitable plants:Turf grass, ornamentals, young plants, flower beds, potting soil, and trees
- Made in:United States
Our verdict“Choose this if lawn feeding is the main task and humic acid is a useful extra; choose Soil Hume or a dedicated amendment for humic-focused soil care.”
GS Plant Foods Liquid Humic Acid Soil Amendment, Leonardite-Derived, 1 Gallon
GS Plant Foods Liquid Humic Acid is a strong choice for buyers who want a dedicated, liquid leonardite-derived amendment across several growing settings. Its OMRI listing distinguishes it from the Simple Lawn Solutions 15-0-15, which adds nitrogen and potassium but is framed as a lawn fertilizer. The one-gallon container also makes this a better match for repeated use across lawns, trees, gardens, and houseplants than a small bottle intended for limited batches. Dilution is specified at 1:64, giving buyers a clear mixing ratio, though the product must be applied with a sprayer. The main limitation is compatibility: the directions advise against mixing it with low-pH or high-calcium formulations. Wallace DS-80 offers more application routes, but requires powder mixing instead.
Pros:- OMRI listed for organic use
- Leonardite-derived liquid humic acid amendment
- Suitable for lawns, gardens, trees, houseplants, and other plants
- Clear 1:64 mixing ratio for sprayer application
Cons:- Must be diluted and applied with a sprayer
- Should not be mixed with low-pH or high-calcium formulations
- A gallon container may be more than occasional or small-space users need
Best for: Organic-minded gardeners and property owners who want a liquid humic amendment for multiple plant types and already use a sprayer.
Not ideal for: Buyers who need a ready-to-use product, prefer powder for custom application methods, or plan to mix with low-pH or high-calcium formulations.
- Brand:GS Plant Foods
- Form:Liquid
- Source:Leonardite
- Volume:1 gallon (128 fluid ounces)
- Weight:8 pounds
- Mixing ratio:1:64
- Application method:Sprayer
- Specific uses:Plant growth, root development, and nutrient uptake
- Organic listing:OMRI listed
Our verdict“Choose GS Plant Foods for a multi-purpose, OMRI-listed liquid amendment, provided your fertilizer mixes are compatible and you have a sprayer.”
Farmer’s Secret Organic Soil Revitalizer, Liquid Humic Acid Amendment, 32 fl oz
Farmer’s Secret stands out for coverage: its 32-ounce concentrate is listed to treat up to 32,000 square feet at a 1-ounce-per-gallon dilution. That makes it a practical fit for buyers treating a large lawn or several garden beds on a monthly schedule, rather than spot-treating a few plants. The formula uses activated humics from organic sources and can be sprayed or poured onto soil, giving it more application flexibility than a powder such as PowerGrow Systems Humic Acid. It is OMRI listed, but this is a soil amendment, not a direct plant feed; buyers seeking added ingredients such as kelp and potash should look instead at Farm Made Organics Humic+. The tradeoff is the need to measure and dilute it before every application.
Pros:- Listed coverage of up to 32,000 square feet
- Activated humics from organic sources
- OMRI listed
- Can be sprayed or poured onto soil
Cons:- Must be diluted at the specified rate before use
- Designed for soil application rather than direct plant feeding
Best for: Gardeners and lawn owners treating a broad area who want an OMRI-listed liquid concentrate for repeated soil applications.
Not ideal for: People seeking a ready-to-use product or a direct-feed fertilizer, since this concentrate needs dilution and is intended for soil application.
- Brand:Farmer’s Secret
- Form:Liquid
- Volume:32 fluid ounces
- Main ingredient:Activated humics
- Mixing ratio:1 oz per gallon (1:128)
- Application method:Spray or pour
- Listed coverage:Up to 32,000 square feet
- Certification:OMRI listed
Our verdict“Choose Farmer’s Secret if you need a concentrated, OMRI-listed liquid for treating a large area on a regular schedule.”
Farm Made Organics Humic+ Liquid Humic Acid Soil Conditioner, 32 oz
Farm Made Organics Humic+ is the most ingredient-diverse liquid in this group: alongside 5% Leonardite humic acid, it includes fulvic acid, sea kelp extract, and soluble potash. That combination suits growers who want a soil conditioner with several listed components, rather than the humic-focused approach of Farmer’s Secret Organic Soil Revitalizer. It also names a wide range of target plants, from lawns and vegetables to indoor plants, and works with a sprayer or watering can. The recommended interval of every two to four weeks offers a recurring routine, though it calls for more frequent applications than Farmer’s Secret’s monthly schedule. The main tradeoffs are mixing before use and an earthy, kelp-like smell before dilution.
Pros:- Contains 5% Leonardite-derived humic acid
- Adds fulvic acid, sea kelp extract, and soluble potash
- Suitable for a broad range of indoor and outdoor plants
- Can be applied with a sprayer or watering can
Cons:- Requires dilution before application
- Has an earthy, kelp-like smell before dilution
- Recommended application every two to four weeks may mean more frequent upkeep
Best for: Home growers managing a mix of lawns, vegetables, ornamentals, and indoor plants who want humic acid combined with fulvic acid, kelp, and potash.
Not ideal for: Buyers sensitive to earthy or kelp-like odors, or those who prefer a simpler humic-only amendment with a monthly application schedule.
- Brand:Farm Made Organics Co.
- Form:Liquid
- Volume:32 fluid ounces
- Humic acid concentration:5% from Leonardite
- Additional ingredients:Fulvic acid, sea kelp extract, soluble potash
- Application method:Mix with water; apply with a sprayer or watering can
- Recommended frequency:Every 2 to 4 weeks during the growing season
- Target plants:Lawns, flowers, vegetables, trees, shrubs, and indoor plants
- Country of origin:USA
Our verdict“Pick Humic+ if you want a multi-ingredient liquid for varied plants and are comfortable with regular mixing and applications.”
Bloom City Humic Acid Liquid Soil Conditioner for Plants and Lawns, 32 oz
Bloom City’s 32-ounce liquid is the clearest fit here for gardeners focused on soil structure: its stated uses include helping loosen compacted soil while supporting nutrient uptake and root strength. That focus makes it a more targeted choice than Farm Made Organics Humic+, which lists several added ingredients and a wider range of plant targets. Bloom City is intended for both lawns and gardens and can slot into an existing lawn-care routine. Its 1:1000 mixing ratio means buyers should follow the product’s dilution directions rather than assume the stronger rates listed for other concentrates apply. The product data does not specify a coverage area or an organic listing, so buyers who need those details for planning or organic-program requirements may prefer Farmer’s Secret, which lists both coverage and OMRI status.
Pros:- Designed to help loosen compacted soil
- Supports nutrient uptake and root strength
- Suitable for lawns and gardens
- Can be incorporated into regular lawn-care routines
Cons:- Requires dilution before use
- Product data does not state treatment coverage
- Product data does not list an organic certification
Best for: Lawn and garden owners who want a liquid humic soil conditioner with a stated focus on compacted soil, root strength, and nutrient uptake.
Not ideal for: Buyers who need a stated treatment coverage, a listed organic certification, or a product that does not require dilution.
- Brand:Bloom City
- Form:Liquid
- Volume:32 fluid ounces
- Mixing ratio:1:1000
- Use:Lawns and gardens
- Pack count:1
- Product weight:2 pounds
Our verdict“Choose Bloom City if compacted soil is your main concern and you can work a diluted liquid into your lawn or garden routine.”
GS Plant Foods Humic Acid Soil Amendment, Liquid Concentrate, 32 oz
GS Plant Foods is a flexible add-on for growers who already have a fertilizer routine and want to include a Leonardite-derived humic amendment. It is OMRI listed and described as compatible with many garden, lawn, houseplant, and landscape fertilizer programs, giving it broader program fit than the more ingredient-specific Farm Made Organics Humic+. Its listed dilution rate is 2:128, and the spray application suits buyers equipped to mix and apply concentrates. The key limitation is compatibility: the product data advises against mixing it with low-pH or high-calcium formulations. That restriction matters more for growers combining inputs in a tank than for those applying it separately. Compared with Farmer’s Secret, GS Plant Foods lists no coverage figure, so area planning may require checking the full label.
Pros:- Leonardite-derived humic acid source
- OMRI listed for organic use
- Listed for lawns, gardens, houseplants, and landscape plants
- Compatible with many existing fertilizer programs
Cons:- Should not be mixed with low-pH formulations
- Should not be mixed with high-calcium formulations
- Product data does not provide a coverage figure
Best for: Gardeners, lawn owners, and landscape managers who want an OMRI-listed liquid amendment to add to an established fertilizer program and can apply it separately when needed.
Not ideal for: Buyers who routinely tank-mix low-pH or high-calcium products with amendments, or who need a stated coverage area to plan treatment.
- Brand:GS Plant Foods
- Form:Liquid
- Source:Leonardite
- Organic listing:OMRI listed
- Volume:32 fluid ounces
- Mixing ratio:2:128
- Application method:Spray
- Specific uses:Plant growth, root development, and nutrient uptake
Our verdict“Choose GS Plant Foods if you want an OMRI-listed humic concentrate for an existing program and can avoid incompatible tank mixes.”
PowerGrow Systems Humic Acid Fertilizer and Soil Conditioner, 5 lb
PowerGrow Systems is the powder pick for buyers who prefer a dry amendment over the lineup’s liquid concentrates. Its mined, decomposed-organic-matter source is screened for garden use, and the listed goals include supporting water retention, microbial activity, root health, nutrient uptake, and seed germination. That makes it a different format choice from GS Plant Foods Humic Acid Soil Amendment, which is a Leonardite-derived liquid concentrate suited to spray application and existing fertilizer programs. The powder’s main drawback is practical uncertainty: its mixing ratio is listed as 1:0:0, which does not provide a usable dilution instruction and may need clarification from the label or supplier. Coverage is described only as medium, so it is harder to plan for a specific area than with Farmer’s Secret.
Pros:- Powder format offers an alternative to liquid concentrates
- Screened for garden use
- Listed to support water retention and microbial activity
- Intended to support root health, nutrient uptake, and seed germination
Cons:- Listed mixing ratio of 1:0:0 is unclear and may need clarification
- Coverage is described only as medium, without a specific area
- Product data does not specify an organic certification
Best for: Gardeners who specifically want a dry humic amendment for soil and are willing to confirm application directions before use.
Not ideal for: Buyers who need clear mixing instructions, a defined coverage area, or the convenience of a ready-to-measure liquid concentrate.
- Brand:PowerGrow Systems
- Model number:HUMIC-5LB
- Form:Powder
- Weight:5 pounds (80 ounces)
- Specific uses:Organic
- Listed coverage:Medium
- Target species:Plants
- Listed mixing ratio:1:0:0
Our verdict“Pick PowerGrow Systems if you want a screened powder and can verify its application rate before treating your garden.”
How We Picked
I compared the 15 products by the decisions that most affect a humic-acid purchase: form and application method, intended use, package size, and how clearly the product fits a lawn, garden, or container-plant routine. I also separated humic-focused amendments from blends that add ingredients such as seaweed or fertilizer nutrients, since those serve different goals. A larger container can make sense for broad treatment but is less convenient for occasional spot use; a soluble powder saves liquid storage space but adds a mixing step.
The ranking favors products with a clear role and useful flexibility, rather than treating every humic-labeled product as interchangeable. GS Plant Foods Liquid Humic Acid Soil Amendment leads for its adaptable liquid-concentrate format, while The Andersons ranks for large lawns and Wallace Organic Wonder for buyers who prefer powder. Products with narrower applications, smaller packs, or additional fertilizer components rank lower for a general roundup, though they may be the better match for a specific routine. Product labels should guide dilution, coverage, and application timing; those details can vary by formulation.
| humic acid fertilizer | Form |
|---|---|
| FoliarTech Organic Humic Acid | Liquid |
| Down To Earth Organic Granular | Granules |
| Humic Acid Fertilizer and Soil | Granules |
| Bloom City Humic Acid Liquid S | Liquid |
| Bloom City Humic Acid Liquid S | Liquid |
| The Andersons Humic DG Organic | Granules |
| Wallace Organic Wonder DS-80 S | Water-soluble powder |
| Simple Lawn Solutions Soil Hum | Liquid |
| Simple Lawn Solutions 15-0-15 | — |
| GS Plant Foods Liquid Humic Ac | Liquid |
| Farmer’s Secret Organic Soil R | Liquid |
| Farm Made Organics Humic+ Liqu | Liquid |
| Bloom City Humic Acid Liquid S | Liquid |
| GS Plant Foods Humic Acid Soil | Liquid |
| PowerGrow Systems Humic Acid F | Powder |
Factors to Consider When Choosing Best Humic Acid Fertilizers
The right choice depends less on the word “humic” on the label and more on where you plan to apply it, how you prefer to spread it, and what else your soil needs. Use these factors to avoid paying for a format or added ingredient that does not fit your routine.
Match the Form to Your Application Routine
Liquids, granules, and soluble powders solve different handling problems. A liquid concentrate can be convenient for measured mixing and spot treatment, but it still needs a suitable sprayer or watering setup. Granules can cover broad ground with a spreader, though spreading evenly around beds or small containers may be awkward. Soluble powder can reduce the amount of liquid you store, but only if you are comfortable mixing it according to the label. Choose the method you will apply consistently rather than assuming one form works best for every garden.
Estimate Coverage Before Choosing Container Size
A large package is useful only when its labeled rate and your treatment area make it practical to use. Compare the application directions and stated coverage, not just the net weight or fluid volume, because concentrates can have different dilution rates. For a small garden or a first trial, a compact bottle may reduce leftover product and storage hassle. For a large lawn, a bulk granular product may simplify repeated applications, but check that your spreader can handle the material. If coverage information is unclear, contact the manufacturer rather than guessing at a dose.
Decide Whether You Want Humic Material Alone or a Blend
Some products focus on humic or humic-and-fulvic material, while others add seaweed or fertilizer nutrients. Those additions may fit an existing lawn-feeding plan, but they also make it harder to isolate the effect of a humic amendment. Check the guaranteed analysis and ingredient list before combining a blend with other fertilizers. Applying overlapping nutrient products can conflict with soil-test recommendations or the needs of a particular plant. If your goal is a targeted soil amendment, a simpler formula may be easier to fit into a broader care plan.
Use Soil Tests to Set Expectations
Humic products are soil amendments, not substitutes for diagnosing every plant or lawn problem. A soil test can reveal whether pH or nutrient levels need attention, while drainage, compaction, watering, and light may be the real limits on growth. Avoid treating humic acid as a guaranteed fix for yellowing leaves or weak turf without checking those conditions. Follow the product label and local guidance for application rates and timing. This approach helps prevent unnecessary applications and keeps the amendment in a supporting role.
Check Compatibility With Your Equipment and Other Inputs
Before mixing a liquid concentrate or soluble powder into a tank, read its label for compatibility, agitation, and dilution instructions. A product that works well with a watering can may not suit every sprayer or fertilizer mix. Combining several materials without checking compatibility can cause settling, clogging, or uneven application. For a new combination, follow manufacturer guidance and avoid mixing products in a full tank before confirming they are compatible. Buyers who want a simple routine may prefer a standalone product applied separately.
Choose for the Whole Season, Not a Single Application
Think about how often you expect to treat the area and where the product will be stored. Large containers can be convenient for recurring lawn work, but they take up space and may be excessive for a few houseplants. Small bottles are easier to store and handle, though frequent use can mean more replenishment. Dry formats avoid storing a large volume of liquid but need protection from moisture and careful measuring. Pick a size and form that fit your actual schedule, and follow label directions for storage and repeat applications.
Frequently Asked Questions
Should I choose a liquid, granular, or powder humic acid product?
Choose based on your application area and equipment rather than assuming one form is stronger. Liquids suit measured mixing and smaller or targeted jobs, granules are often easier to spread across broad lawn areas, and soluble powders offer a dry format that must be mixed before use. The Andersons Humic DG represents the large-area granular option in this group, while GS Plant Foods and Bloom City offer liquid formats. Wallace Organic Wonder DS-80 is the powder choice. Check each label for application rate, coverage, and equipment directions before deciding.
Can I use a humic acid fertilizer with a regular lawn fertilizer?
Often, a humic amendment can be part of a lawn-care program, but compatibility and timing depend on the specific products. Read both labels before mixing or applying them together, and avoid duplicating nutrients if the humic product already includes fertilizer, as with Simple Lawn Solutions 15-0-15. A soil test can help determine whether extra nutrients are needed at all. When compatibility is uncertain, apply products separately according to their labels. That also makes it easier to track how your lawn responds.
Is a larger container always the better choice for value?
No. A larger container may suit a broad lawn or repeated seasonal use, but it can be inconvenient if you are treating a small garden or only a few plants. Compare labeled coverage and dose rates rather than package size alone, since concentrated products differ in how much finished application they make. Storage, measuring, and the chance of leaving unused product also matter. Bloom City’s multiple sizes illustrate why package scale can be matched to the intended use. Buy for your likely application area, not an imagined one.
Do I need a humic acid product that also contains seaweed or fertilizer?
Only if the added ingredients fit your plan. A seaweed blend may appeal to someone seeking a combined soil amendment, while a fertilizer blend adds nutrients that should be counted alongside other lawn or garden inputs. A humic-focused product gives you more separation between soil conditioning and feeding. Review the label and any guaranteed analysis, then compare it with your soil-test results and existing products. Avoid choosing a blend just because it lists more ingredients.
Can humic acid replace soil testing or fix poor drainage?
No. Humic acid products do not replace a soil test, and they cannot by themselves correct every issue linked to poor growth. Testing can identify pH or nutrient concerns, while drainage and compaction may call for different remedies. Treat a humic amendment as one possible part of soil care, not a universal cure. If plants continue to struggle, check watering, light, soil structure, and nutrient conditions before repeating applications. Follow the product label and local recommendations.
Conclusion
For most buyers seeking one adaptable liquid option, I recommend GS Plant Foods Liquid Humic Acid Soil Amendment as the best overall pick. For large lawns, The Andersons Humic DG is the more fitting choice; for buyers who prefer a dry product to mix, Wallace Organic Wonder DS-80 stands apart. A smaller Bloom City bottle is a sensible beginner option for a limited area, while a larger Bloom City or FoliarTech container better suits recurring use. Buyers who want an added nutrient blend should look closely at Simple Lawn Solutions 15-0-15, but those seeking a humic-focused amendment should choose a product without added fertilizer nutrients. Match the format and label directions to your area and routine, then let soil conditions—not package size alone—guide the final choice.
