Postentry quarantine is a pest risk mitigation measure designed to enable importers to move planting stock representing a high risk of plant pest dissemination from designated foreign sources into the U.S. The regulations for postentry quarantine is specified in 7 CFR 319.37-23. All requirements for postentry quarantine are located in the Plants for Planting Manual.
Final destination of the postentry taxa is limited to those States with a Postentry Quarantine Agreement.
The length of the quarantine period is generally two years with exceptions for some plant species as specified in the Plants for Planting Manual.