3/20/2025 - By Dr. Aaron Palmateer

It is no surprise that Harrell’s is widely recognized first as a fertilizer company due to the popularity and widespread use of POLYON® controlled-release fertilizer in horticulture. However, Harrell’s provides the horticulture industry with much more than just fertilizer.

Harrell’s is a distributor for the leading manufacturers of pesticides but also offers a broad-spectrum lineup of contact and systemic fungicides, providing leading active ingredients in quality formulations all in Harrell’s ProtectMAX® product line.

Harrell’s ProtectMAX® Portfolio

The ProtectMAX® portfolio for horticulture currently includes 10 fungicides representing 7 modes of action (FRAC groups 1, 3, 11, 21, M3, M5, P07) that truly cover the spectrum of economically important plant pathogens, providing rotation options for cost-effective disease control and successful fungicide resistance management.

The ProtectMAX® portfolio complements most of the leading fungicide brands such as Postiva®, Avelyo®, Broadform®, Adorn®, Eagle®, and Decree®, increasing options and making plant disease management strategies more flexible and easier for nursery and greenhouse growers than ever before. This also includes Harrell’s ProtectMAX® Fluoxastrobin SC combining power and versatility for enhanced protection from over 55 turf & ornamental diseases.

Harrell’s ProtectMAX® Guide

Harrell’s provides a plant protection guide (which you can find here) including product details, use sites, and key features such as product-specific disease targets, restriction entry intervals, application rate ranges, FRAC groupings, and benefits. In addition, there is a product cheat sheet indicating phytomobility and average use rates for both drench and spray applications, further simplifying plant disease management decisions for nursery and greenhouse growers.

*Not all products registered in all states. Always read and follow label instructions.*

Connect With Your Local Harrell’s Rep

If you have any questions about any of the products mentioned, Harrell’s ProtectMAX® product line, usages, or what products can help solve your problems, connect with your local Harrell’s Rep. They have the knowledge and expertise to deliver the recommendations and solutions you need for your operation.