Osmocote Blend 18-5-8 3-4 mo. Fertilizer Enhanced with E-Max Technology | 50lb (40/PL)

Controlled-Release 18-5-8 Fertilizer, 3-4 Month Release, 50lb

A controlled-release fertilizer only works as intended if its release window matches how long a crop will actually be in production. Osmocote Blend 18-5-8 with E-Max Technology combines Osmocote's 100% resin coat prills with ICL's newest E-Max polymer coating for sustained delivery through a predefined release period.

50lb (40/PL), 3-4 months release window, for greenhouse, nursery, and landscape use.

Key Features & Benefits

• 18-5-8 N-P-K, resin-coated controlled-release prills — combines Osmocote's 100% resin coat with E-Max polymer coating.
• Micromax micronutrient package included — provides Ca, Mg, S, Fe, Cu, Zn, Mn, B, and Mo in a homogeneous granule.
• Starter charge plus sustained release — two coated forms deliver nutrients from application through the labeled release window.
• Suited to high-alkalinity irrigation water and high growing-media pH — performs where those conditions can limit other fertilizers.

Who Should Use This Osmocote Blend

This fits greenhouse, nursery, and landscape operations planning a crop cycle around a 3-4 months feeding window, especially where irrigation water runs high in alkalinity.

About ICL Growing Solutions

Osmocote and Osmocote Blend are controlled-release fertilizer brands manufactured by ICL Growing Solutions, using resin and polymer-coated prill technology to deliver nutrients gradually over a labeled duration window.

Frequently Asked Questions

How and when should this fertilizer be applied?

Incorporate it into growing media at planting or topdress an established container, timing the application to the crop's expected production cycle since this formula is built to release over 3-4 months. The starter charge in the coating begins feeding immediately, with the resin- and E-Max-coated prills carrying nutrition through the rest of the release window.

What does '18% Nitrogen' and 'High Sulfur' mean on the label?

The 18-5-8 ratio means this formula supplies 18% nitrogen relative to phosphorus and potassium, with an elevated sulfur content noted on the label alongside the Micromax micronutrient package. That combination is built to support general greenhouse, nursery, and landscape production rather than a single crop type.

What is E-Max Technology?

E-Max is ICL's polymer-coated controlled-release technology, combined here with Osmocote's traditional 100% resin coat prills to provide two different coated forms for sustained nutrient delivery. ICL confirms this is a genuine coating technology used across several of its Osmocote Blend product lines.

How does this 3-4 months release differ from the 8-9 months version?

Both versions share the same 18-5-8 N-P-K ratio, Micromax micronutrient package, and E-Max/resin coating technology; the only difference is the labeled release window, 3-4 months versus 8-9 months. Choosing between them comes down to matching the release window to the crop's expected time in production.

Why is this formula suited to high-alkalinity irrigation water?

ICL positions this Osmocote Blend as performing well when growing with high alkalinity irrigation water or high growing-media pH, conditions that can interfere with nutrient availability in some fertilizer formulations. That resistance to alkalinity issues is a stated use case on the product's own label.