National Seed Health System

Seed health tests

The National Seed Health System (NSHS) is a program authorized by USDA-APHIS and administered by the Iowa State University Seed Science Center to accredit both private and public entities to perform certain activities needed to support the issuance of Federal phytosanitary certificates for the international movement of seed.

Through the NSHS, new seed health testing methods are incorporated into the accreditation program to maintain the program on the cutting edge of technology. 

To access the National Seed Health System website, visit: