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Welcome!

The Plant Disease and Insect Clinic, operated by the NC State University Department of Entomology and Plant Pathology, diagnoses plant and insect problems for farmers, growers, landscapers, homeowners, and gardeners. In consultation with expert faculty, we recommend ways to treat or prevent the problems we diagnose. We work in partnership with North Carolina Cooperative Extension, whose county personnel can help identify common problems as well as assist you in properly collecting and submitting a sample to the PDIC. Browse our menu, or jump to the how to submit a sample page.
Poinsettia and also a section of tree trunk infected with Armillaria

PDIC Holiday Closings 2022

The NC State Plant Disease and Insect Clinic will be closed Thursday and Friday, November 24-25, 2022 for the …

Cover photo for Online Cypress Diagnostic Guide

Online "Cypress" Diagnostic Guide

An Identification and Decision Guide to Cypress Problems is now available on the NC State Plant Disease and Insect …

Cover photo for PDIC Closing Early 30-Sep-2022

PDIC Closing Early 30-Sep-2022

With the effects of Hurricane Ian expected to be strongest from noon to 8 p.m. today, the Plant Disease …

Snow on berry-laden branches of a deciduous holly

PDIC Holiday Closings 2021

The NC State University Plant Disease and Insect Clinic will be closed from Friday, December 24, 2021, through Sunday, …

Cover photo for Wasps at Porch Lights

Wasps at Porch Lights

In recent weeks we’ve been getting a lot of messages regarding large wasps coming to porch lights. In all …

Poinsettia in bloom, next to stump with Armillaria under the bark

PDIC Holiday Closings 2020

The NC State University Plant Disease and Insect Clinic will be closed on the following dates for the holidays: Thanksgiving: …