What makes a certified grapevine clean? While there is no guarantee or warranty that covers each individual vine, all vines in the certification

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2 What makes a certified grapevine clean? While there is no guarantee or warranty that covers each individual vine, all vines in the certification program have passed through the annual filter of that states certification standards. In Washington state, Certified plants must be free of Grapevine fanleaf virus, Grapevine leafroll-associated viruses, Grapevine virus A, Grapevine virus B, Grapevine rupestris stem pitting virus, Arabis mosaic virus, Tomato ringspot virus, Grapevine red blotch virus, Grapevine vein clearing virus, Xylella fastidiosa, Daktulosphaira vitifoliae (Grape phylloxera), and Planococcus ficus (Vine Mealybug).

3 Basic requirements for certified blocks in Washington Site approval and soil sampling for Xiphinema nematodes. Fumigation required before planting if Xiphinema sp. of concern is found. Mother blocks planted with Foundation level material (G1). The department will conduct at least two inspections of registered grapevines during each growing season. Samples are collected and tested at the Clean Plant Center in Prosser. Any vines that test positive for a virus of concern must be removed in order to keep the block certified. Certified planting stock, including all components of budded or grafted plants, must be propagated from cuttings taken from G1, G2, or G3 grapevines.

4 What paperwork to look for when receiving certified grapevines? WSDA requires pre-notification for any out-of-state grapevine material! Out of state shipments need a Phytosanitary Certificate and a tag or stamp that shows verification that they come from a certification program. Certified grapes from within WA would not require a phytosanitary certificate, just a tag or stamp.

5 Phytosanitary Certificate example California Certified Stock Tag What is a Phytosanitary Certificate?

6 Clean plants won t always stay clean. They need attention! Regular scouting and strategic pest management are important to maintaining a clean vineyard. Removing infected vines helps stop the spread of virus in your and your neighbor s vineyard.

7 Resources for growers Pacific Northwest Pest Management Handbook WSU Viticulture and Enology: Research and Extension OSU Viticulture and Enology: Research and Extension For Quarantine/Import/Export questions contact Aaron Paul at or (509) List of Washington, Oregon, and California certified grape growers.

8 Certified grape growers in WA Cloud Mountain Farm Center 6906 Goodwin Road Everson, WA (360) Inland Desert Inc W Kelly Road Benton City, WA (509) Sidhu & Sons dba Briggs Nursery, LLC 715 S. Bank Road Porter, WA (360) Ste. Michelle Wine Estates LTD PO Box 231 Paterson, WA (509) Terroir Nouveaux Nurseries, LLC 2131 Arrowsmith Road Sunnyside, WA (509) or (509)

9 Certified grape growers in OR Apical Vines Nursery Bailey Nurseries Brigadoon Vineyards Cole Family Vineyards Countryside Nursery Cutting Edge Grapevines Ethell Development Co. King Estate Vineyards Kraemer s Nursery Inc. Melrose Vineyards Meyer Nursery & Orchard Northwoods Nursery Plaisance Viticulture St. Joseph Orchard Sunset Knoll Vineyard Weeks Berry Nursery

10 Certified grape growers in CA Alder Springs Grapevine Guillaume Grapevine Nursery Nursery Alexander Grapevine Herrick Grapevines Nursery Jaguar Gardens Cal-Western Nurseries, Kendall-Jackson Inc. Winery, Ltd. Casa Cristal Nursery KLM Ranches Cipco Lauras Vineyard Knights Grapevine Cornerstone Certified Nursery Vineyard Martinez Orchards Dempel Farming Co. Mercier-California Duarte Nursery, Inc. Monrovia Nursery Fanucchi Ranch Morton Nursery Gallo Vineyards, Inc. Mountain Cottage Gerardo Guzman Vineyard NovaVine Inc. Olguin Grape Nursery Pebble Ridge Vineyards Putah Creek Farming Co. San Vicente Vineyards Shannon Ranches, Inc. Sierra Gold Nurseries SP3 Vineyard / Nursery Sutter Home Vineyard Tecuya Tree & Vine Vintage Nurseries LLC Westridge Wines Zuckerman-Heritage, Ltd. Zuni Vineyards