Phytosanitary certificates play a crucial role in international and interstate agricultural trade. They are official documents that confirm agricultural products have undergone inspection and are free from pests and diseases. There are two types of phytosanitary certificates: one for exporting goods out of the country and the other for shipping plants to another state. 

Ultimately, this depends on each state’s agricultural laws and regulations. Some states may not require it, but may require a certificate of origin. The best way to know for sure is to check with your state’s Department of Agriculture and of the state(s) you plan to ship to.

Most states’ Department of Agriculture websites will have applications available online, or you can contact your state’s DoA office directly for guidance and information.