Welcome to the Division of Plant Health

Gypsy Moth Program

The Ohio Department of Agriculture conducts aerial treatments for the invasive Gypsy Moth in the spring and early summer. Visit our page for more information.

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Fertilizer Regulation

The Pesticide and Fertilizer Regulation section regulates fertilizer production, distribution, and storage in Ohio, as well as Ag Fertilizer Applicators.

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Invasive Pests

Monitors and controls invasive plants and insects such as Asian longhorned beetle, Hemlock woolly adelgid, Walnut twig beetle, and gypsy moth.

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Grain Warehouse, Feed & Seed

The GFS program regulates grain commodity handlers in Ohio; helps assure label claims are accurate on animal feed, as well as all agricultural, vegetable, flower and lawn seeds.

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Pesticide Regulation

The Pesticide & Fertilizer Regulation section licenses pesticide dealers and applicators and offers training and testing sessions throughout the year.

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The Ohio Department of Agriculture's Division of Plant Health houses the Grain Warehouse, Feed & Seed, Pesticide & Fertilizer Regulation, and Plant Pest Control sections, which are responsible for many consumer- and farmer-protections regulations. Staff members' duties include registering pesticides, licensing pesticide applicators, investigating pesticide use complaints, verifying label statements on feed and fertilizers, monitoring the financial stability of grain elevators, testing germination of packaged seeds, inspecting honey bee colonies, regulating plant nursery stock, and working with USDA-APHIS and the U.S. Forest Service to control invasive pest species. Our goal is to hold businesses which produce, process, and distribute plant-based agricultural products to high standards of integrity and safety.

Online Pesticide Tools

Online searches for pesticide applicator recertification credits and classes, exam registration, and online license renewals.

Plant Health

Gypsy Moth Treatment Map

An interactive map showing the treatment areas for the current gypsy moth control season.

Plant Health

Apiary Inspection Summary

Inspectors look for foulbrood, chalkbrood, nosema, varroa mites, and small hive beetle.

Plant Health

Online Applicator Renewal

Plant Health

Ohio Applicator Forecast

The Ohio Applicator Forecast is designed to help nutrient applicators identify times when the weather-risk for applying is low.

Plant Health

Fertilizer & Manure Guide

A summary of manure and fertilizer rules across Ohio

Plant Health

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Pesticide Private Applicator Certification Deadline Extended

With the signing of House Bill 197, Ohio’s COVID-19 emergency response legislation, the March 31, 2020 deadline for private pesticide applicators (farmers) and the May 31, 2020 deadline for agricultural fertilizer certificate holders to renew their license and get training has been extended.

Ohio Department of Agriculture Suspends Operations at Vista Grain, LLC

The Ohio Department of Agriculture (ODA) suspended all operations at Vista Grain, LLC in Washington Court House after discovering it was unable to cover its outstanding obligations to farmers.