Organic Community Gold Zones 3-10

BioAG Ful-Humix (Humic Acid)

by BioAG

Soil health improvement, nutrient uptake enhancement, microbial activity support

Photo

Humic acid 55% concentrate · Soil health improvement, nutrient uptake enhancement, microbial activity support

$25-40 per lb

Affiliate disclosure: we may earn from qualifying purchases.

Product Details

Active Ingredient:
Humic acid 55% concentrate
Form:
Powder (dissolve in warm water, filter, spray)
Coverage:
1 lb makes many gallons of solution
Cost:
$25-40 per lb

Compatible Grass Types

Kentucky Bluegrass Tall Fescue Fine Fescue Perennial Ryegrass Bermuda Zoysia St. Augustine Centipede Bahia Buffalo Grass

Community Consensus

The gold standard humic acid product on r/lawncare. Mix with kelp for monthly organic boost.

Overview

BioAG Ful-Humix is the lawn care community’s top-rated humic acid product. Humic acid improves soil structure, enhances nutrient uptake, and supports beneficial microbial activity in the soil. It is a foundational product in organic lawn care programs.

How It Works

Humic acid is a complex organic compound derived from decomposed plant material. It improves the soil’s cation exchange capacity (CEC), meaning the soil can hold and release more nutrients to grass roots. It also stimulates beneficial soil microorganisms and improves soil structure.

Application

Dissolve the powder in warm water, filter to remove undissolved particles, and spray with a pump or backpack sprayer. Apply monthly during the growing season when soil temperature is above 50°F (cool-season) or 65°F (warm-season) per Rule 4.1.

Best Combined With Kelp

The community consensus is that monthly humic acid + kelp extract applications provide the best return on investment for soil health improvement. The humic acid improves nutrient availability while kelp provides natural growth hormones (auxins and cytokinins) for root development.