Zinc Sulfate Powder (50 lb)

Zinc Sulfate Powder in the original 50 lb package is intended for farms, orchards, vineyards, and other operations making repeated micronutrient applications. It contains 35.5% zinc and 17.5% sulfur in a highly soluble powder.

Use based on testing

Zinc supports enzyme activity, protein formation, and normal plant growth, but only small amounts are required. Confirm a deficiency with soil or tissue testing before application and use crop-specific recommendations. Visual symptoms can resemble other nutrient, pH, or root problems.

• Soil: Incorporate at a tested, calculated rate.
• Foliar: Published guidance is 2–5 lb per acre; manage concentration and timing to reduce leaf burn or fruit marking.
• Fertigation: Confirm system compatibility and distribute the calculated amount evenly.

Organic status: This original 50 lb package is OMRI listed and CDFA approved for use in certified organic production. The 25 lb repack is not represented as organic and does not inherit this listing.

Review the current Product Label and Safety Data Sheet before handling or application.

California Proposition 65 WARNING: This product can expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm; for more information, visit www.P65Warnings.ca.gov.

Compare this product with additional nutrient-specific fertilizers selected for garden and farm fertility programs.