Boric Acid Powder for organic agriculture

Shop Optibor boric acid powder, OMRI Listed for use in organic agriculture, in 8 oz, 1 lb, 4 lb, and 55 lb sizes. Choose a package to match your nutrient-preparation volume, from small batches to commercial stock-solution preparation.

Compare package sizes

• 8 oz boric acid powder: the smallest package in this collection.
• 1 lb boric acid powder: a compact option for smaller nutrient programs.
• 4 lb boric acid powder: an intermediate size for recurring solution preparation.
• 55 lb boric acid powder: a bulk bag for commercial operations.

A boron source for nutrient formulation

Optibor TG is technical-grade orthoboric acid (H₃BO₃), with 99.9% purity and 17.5% boron. Review the individual product specifications and directions when selecting a boron source for hydroponic, fertigation, or foliar nutrient programs.

Plan applications precisely

Select application rates with a qualified crop advisor or agronomist, taking account of your crop, existing fertilizer program, and water or tissue analysis. Follow product directions and consult the safety data sheet for handling and storage information. Do not treat package size as an application-rate recommendation.