Boron - Soluble 50 lb (Solubor)

Organic (OMRI)

20.5% boron

Concentrated soluble boron for liquid application on agricultural scales.

Boron is a trace nutrient that is often deficient in Willamette Valley soils; however it is needed in very small amounts and overapplication is toxic to plant growth.  Use only if a soil or plant tissue test indicates a boron deficiency.

At recommended soil application rates of 1 lb (pure boron) per acre, a 50# bag will cover ten acres, and one ounce will cover 500 square feet.  Mix thoroughly and apply evenly to avoid zones of boron toxicity.

For garden-scale use, consider Grower's Secret soluble boron which is more expensive per unit but available in smaller quantities.