Boca Hydro Zinc Granular Fertilizer 25%
6-Month Slow Release | Sulfur-Free | Optimized for Citrus

Unlock vigorous growth and nutrient efficiency in your citrus trees with Boca Hydro Zinc Granular 25%, a high-performance micronutrient fertilizer specially formulated for long-term plant health. With 25% elemental zinc and a sulfur-free formula, this advanced granule provides a clean, consistent, and targeted release of zinc over a 6-month period, ensuring plants get exactly what they need—when they need it.

Zinc is essential for chlorophyll formation, hormone balance, fruit sizing, and overall tree vigor—especially in zinc-hungry crops like citrus. Zinc deficiency can cause leaf yellowing, dieback, and small, misshapen fruit. Boca Hydro’s granular zinc addresses these issues at the root, offering extended protection and uptake without the risks of over-application or sulfur-induced nutrient lockout.

Key Benefits:

25% Elemental Zinc – One of the highest zinc concentrations on the market

6-Month Controlled Release – Feeds continuously with no leaching or burn

Sulfur-Free Formula – Will not react with calcium.

Tailored for Citrus Trees – Ideal for oranges, lemons, limes, and other fruiting trees

Improves Fruit Set & Leaf Color – Promotes healthy growth and nutrient utilization

Efficient Nutrient Uptake – Slow-release matrix prevents loss to runoff and volatilization

Recommended Use:
Broadcast or band-apply around the dripline of citrus trees. Incorporate into the top few inches of soil or water in after application. Avoid placing directly against trunk. For potted citrus, use sparingly based on container size.

Application Rate (General):

Young Citrus: 1–2 tablespoons per tree
Mature Citrus: ¼ to ½ cup per tree, applied every 6 months

Always adjust based on soil tests, crop age, and local conditions. Not intended for foliar use.

Boca Hydro Granular Zinc 25% Sulfur Free Slow Release Feeds for 6 Months