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NCPN Grapes
NCPN Grapes
NCPN Grapes
University of California
NCPN Grapes

Welcome to the National Clean Plant Network for Grapes

Grape blog

Mosquitoes Are in the News Three-Fold at UC Davis and Here's Why!

Aedes aegypti, the mosquito that transmits dengue, yellow fever, chikungunya and Zika viruses. (CDC Photo)

Mosquitoes are in the news three-fold at the University of California, Davis. First, there's the upcoming free public event, the Zika Public Awareness Symposium, set Thursday, May 26 from 6:30 to 8:30 p.m. in Room 1001 of Giedt Hall.  Professor...

Fleeting Face of Mr. Van Dyke

A male bumble bee, Bombus vandykei, sips nectar from a lavender blossom. (Photo by Kathy Keatley Garvey)

He's racing through the lavender patch at breakneck speed, as if he's going to be charged with nectar robbing. The male Bombus vandykei, an engaging blond bumble bee, twists, turns and zig-zags through the long-stemmed lavender. There is no one in...

Why That Ol' Flame Stakes Out the Back Yard

Red flameskimmer dragonfly (Libellula saturata) perches on a bamboo stake. (Photo by Kathy Keatley Garvey)

Sometimes the red flameskimmer dragonfly (Libellula saturata) will let you approach it. Sometimes it's having a bad hair day or a bad predator/prey day or a just-leave-me-alone day and won't let you near it. This one (below) let me approach it. "Hey,"...

Why This Bumble Bee Is a Treasure

A male Bombus vandykei,also known as the Van Dyke Bumble Bee, forages on lavender in Vacaville, Calif. on May 17. (Photo by Kathy Keatley Garvey)

It's so blond that all you can say is "Wow!" It's sort of like the Reese Witherspoon of bumble bees. But then the gender doesn't match. Okay, the Owen Wilson of bumble bees. The male Bombus vandykei, commonly called "The Van Dyke Bumble Bee,"  is a...

NCPN Webinar Series: Clean Plants for the Future of the Eastern Wine and Grape Industry


The National Clean Plant Network for Grapes (NCPN-G) was established to improve the health and productivity of wine, juice, and table grape vineyards in the United States. Clean grapevines are the key to higher yields, higher quality fruit, and...


NCPN Webinar Series: Clean Plants for the Future


How the National Clean Plant Network, new testing protocols, and a revitalized New York certification program will reduce the risk of nursery-transmitted viral pathogens.

Weekly on Thursdays at Noon Eastern, March 10 - 31

Preregistration required. Register at:

Full Announcement:



NCPN-Grapes Special Seminar on Grape Crown Gall, February 10, 2015


Dr. Tom Burr leads a highly regarded, world class research program on crown gall of grapes (Agrobacterium vitis).   Dr. Burr came to UC Davis at the invitation of the National Clean Plant Network for Grapes to present the most current knowledge about crown gall, its control and management, as well as future research direction. Presentation is below:

Crown Gall on Grapevines: Management strategies based on current understanding of pathogen biology, Dr. Tom Burr, February 10, 2015

NCPN-Grapes Special Webinar on Grapevine Red Blotch, March 27, 2013



The National Clean Plant Network for Grapes is a body of industry members, experts in plant pathology, regulators and clean plant centers that were created to develop and provide healthy grapevine material to the grape industry in the United States.

The headquarters of the NCPN Grapes is at Foundation Plant Services at the University of California, Davis.  FPS also manages the primary foundation vineyard for the NCPN. 

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