N-Ext Humic12 Liquid Humic Acid 0-0-1

12% concentration liquid humic acid for soil health and nutrient efficiency. Significantly higher concentration than most DIY humic products. Pairs with RGS as the foundation duo for soil carbon programs.

$18.99

5.0

Size: Quart

Quart Gallon

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Greene County Fertilizer N-Ext Humic12 Liquid Humic Acid 0-0-1

$18.99

Green Grass. No Weeds.

Information & Specifications

About This Product

High-Concentration Humic Acid That Makes Everything Else Work Better

N-Ext Humic12 delivers 12% humic acid, which is significantly higher than the 1 to 3% concentrations found in most DIY-available humic products. Humic acid is a fundamental driver of soil fertility. It improves root mass, increases chlorophyll production, enhances nutrient uptake, improves water retention, and builds soil structure. Humic12 is the direct, concentrated way to elevate humic levels in your soil.

The practical benefit is that every other product in your program works more efficiently. Nitrogen produces more color. Micronutrients absorb better. Water penetrates deeper. Humic12 is the force multiplier for your entire fertility program.

Who Humic12 Is For

Every homeowner running a liquid lawn program. Humic acid benefits all soil types and all turf types. If you are applying fertilizer and bio-stimulants, Humic12 makes those inputs more effective by improving the soil's ability to deliver nutrients to the root zone.

Start with RGS if you can only buy one product. Add Humic12 as the second product. Together they form the root growth and soil carbon foundation that everything else builds on.

The RGS and Humic12 Combo

RGS stimulates root growth through sea kelp hormones. Humic12 builds the soil environment that supports those roots. Applying both monthly creates a feedback loop where roots grow deeper into improving soil, which supports even more root growth. This is the foundation combo that experienced N-Ext users run all season long.

Active Ingredients

12% Humic Acid

Grass Types

All warm and cool season grasses

Best Timing

Spring through fall

01

When to Apply

Apply monthly during the growing season, spring through fall. Humic12 works in all soil conditions and at any temperature during active growth. Consistency matters more than timing. Monthly applications build soil carbon levels progressively. Start any time during the season and maintain through fall dormancy.

02

How to Apply

Apply with a backpack or battery-powered sprayer. Water in after application. Humic12 mixes well with RGS for a combined application in a single tank pass. One gallon covers up to 21,300 square feet. Apply evenly across the entire lawn for consistent soil improvement.

03

What to Expect

Improved fertilizer efficiency within the first 2 to 3 applications as humic acid enhances nutrient chelation and uptake. Soil structure improvements develop over a full season of monthly applications. Soil tests taken before and after a season of Humic12 use typically show higher organic matter and improved nutrient availability.

01

When to Apply

Apply monthly during the growing season, spring through fall. Humic12 works in all soil conditions and at any temperature during active growth. Consistency matters more than timing. Monthly applications build soil carbon levels progressively. Start any time during the season and maintain through fall dormancy.

02

How to Apply

Apply with a backpack or battery-powered sprayer. Water in after application. Humic12 mixes well with RGS for a combined application in a single tank pass. One gallon covers up to 21,300 square feet. Apply evenly across the entire lawn for consistent soil improvement.

03

What to Expect

Improved fertilizer efficiency within the first 2 to 3 applications as humic acid enhances nutrient chelation and uptake. Soil structure improvements develop over a full season of monthly applications. Soil tests taken before and after a season of Humic12 use typically show higher organic matter and improved nutrient availability.

Frequently Asked Questions

Answers to the most commonly asked questions about this product:

What makes 12% concentration significant?

Most humic acid products available at retail contain 1 to 3% humic acid. At 12%, Humic12 delivers roughly 4 to 12 times the active ingredient per application. This concentration difference is why professional applicators use Greene County products. You get meaningful soil improvement per application, not trace amounts.

How does Humic12 make other products work better?

Humic acid improves nutrient chelation, which means it makes minerals more available to plant roots. When you apply nitrogen fertilizer to soil with adequate humic acid levels, more of that nitrogen reaches the plant and less is lost to runoff or volatilization. Your existing products become more efficient.

Can I apply Humic12 with RGS in the same tank?

Yes. Humic12 and RGS are the most commonly paired products in the N-Ext lineup. They can be tank-mixed and applied in a single pass. Many experienced users apply both monthly as their base soil health program, then add fertilizer products as needed for color and growth.

How much does one gallon cover?

One gallon covers up to 21,300 square feet at the standard application rate. A quart covers approximately 5,300 square feet. For a typical suburban lawn in the 5,000 to 8,000 square foot range, one gallon provides 2 to 4 monthly applications depending on the exact rate used.

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