Diamond Black


Liquid Humic Acids. General Organics Diamond Black (0-0-1) is derived from 100% pure Leonardite, a naturally occurring form of carbon drawn from prehistoric peat bogs. Containing an exceptionally high percentage of plant-active humates, this organic nutrient helps support beneficial microbial activity in soils and may increase micronutrient availability.

Can be added to all kinds of garden soils and potting mixes, and used with a wide variety of plants during all phases of growth. Diamond Black should be used with soil and potting mixes only. Works with all plant foods.

Available in quart, gallon and 6 gallon sizes.


Potted Plants – Mix 1 Tbsp. per gallon of water.

Lawn, Garden & Yard – Mix 1/2 cup in 5-gallons of water and apply throughout growing season (4-8 times per year) or apply 4 oz. (1/2 cup) per 1,000 sq. ft. 4-8 times throughout the growing season with a hose end sprayer.

Soil/ Soilless Feeding Schedule (PDF)

Ingredients: Potassium hydroxide

Contains Non-Plant Food Ingredients:
6.0% Humic Acids derived from Leonardite