What makes a vine “clean”?

This program has written rules, is administered by CDFA, and the site of all grapevine source mother vines and all program activities are at Foundation Plant Services, (FPS), at U.C. Davis. The source vines are submitted to FPS, tested for at least two years, and once they are deemed "clean" two vines are planted in their Foundation Block. Nurseries are required to have CDFA do a site survey to gain site approval before acquiring the FPS foundation vines to start a Registered and Certified Increase Block. Only first generation cuttings from a nurseries' registered increase block can be called "Certified." Both the rootstock and the budwood must be sourced from a registered block to qualify as certified.

Sunridge Nurseries is committed to selling only California Certified Grapevines. This commitment by Sunridge Nurseries is our way of ensuring that we are part of the solution and positively impacting the industry. With Sunridge a grower does not have to settle for "Clean." Our customers can plant California Certified grapevines that also have a known pedigree with the backing of CDFA, and FPS. This is not only a benefit to the grower but it is in the best interest of the entire industry.

A grapevine grown in a test tube does not make it any better. It is just another means of propagating a vine that is planted out into a field to be another increase block. The vines you receive come from cuttings grown outdoors, in a field, and are the same as all other nursery increase blocks. It is the nurseries sterile practices that are important, and the fact that Sunridge Increase Blocks are Registered and Certified that are critical. Come see our facilities so you can get the feel of cleanliness and understand what "sterile nursery practices" really are. You will see that we offer a product that provides the best of both worlds - Certified Source Material grown in a facility that is State-of-the-Art.