What does certification mean?
Certification means that the plant material has a been subjected to a comprehensive process established, authorized and performed by a state or other governmental entity to minimize the occurrence of regulated pests and diseases in planting stock. State level certification focuses on testing for graft transmissible or systemic pathogens such as viruses.
Five states have grapevine certification programs – California, Missouri, New York, Oregon and Washington.
Common features of the programs:
Participation is voluntary
Registered blocks and foundations are visually inspected and/or tested for significant grape pathogens as defined by the state
Mechanism for tracking vines forwards and backwards
Isolation requirements from commercial plantings
Identity (true-to-typeness) requirements
State Certification Programs
The California Grapevine Registration & Certification Program handles the highest volume of certified grapevine material. Best estimates, based on nursery self reporting, are that approximately 50 million CDFA certified plants are sold annually. Regulations are described at:
Grapevine Registration and Certification Program from the California Dept. of Food and Agriculture
In New York, a certification program was reinstated in 2017. Nursery stock is tested for grapevine fanleaf virus, tomato ringspot virus, tobacco ringspot virus, grapevine leafroll-associated viruses and grapevine red blotch virus. Regulations are described at:
In 2021, Washington and Oregon, the Grape Planting Stock Certification Programs completed the process of harmonizing their grape certification programs to allow the unimpeded flow of clean, virus-tested material from state to state. More information is available at:
Grape Planting Stock Certification from the Washington Dept. of Agriculture