Leonardite is a naturally occurring form of carbon that’s derived from prehistoric peat bogs. Developed over centuries, this carbon only gets richer in humic acid, a substance that has benefits for plants.

Prehistoric Power
Formulated from leonardite, Diamond Black promotes soil structure, increases nutrient retention and reduces water usage. Perfect for all types of plants, during all phases of growth. Additionally, Diamond Black can be used as an additive for making compost or compost tea. Use Diamond Black with any garden soil, potting mix or other soil-based media.