A Pest Alert for Marin Gardeners: Don’t Plant Those Costco Grapevines Just Yet!
This post is a heads-up for Marin County residents who’ve picked up grapevines from Costco. There’s been a discovery of an invasive pest—yep, the glassy-winged sharpshooter—in shipments that landed in several Northern California counties, including Marin.
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It’s important to know what’s at stake and what you need to do to help protect our local gardens and agriculture.
The Threat on Our Doorstep: Glassy-Winged Sharpshooter Detected in Marin
It’s a situation that needs your attention. Recently, Marin and other Northern California counties have sent out urgent advisories about grapevines bought at Costco.
The culprit? The invasive glassy-winged sharpshooter, a pest that can seriously damage crops.
What Exactly is the Glassy-Winged Sharpshooter?
This little insect packs a punch. The glassy-winged sharpshooter spreads a bacteria that causes Pierce’s disease.
Pierce’s disease can kill grapevines, threatening home gardens and the vineyards that define our region, from Sonoma’s hills to Napa’s famous wineries.
The Source of the Infestation: Costco Shipments and a Nursery’s Oversight
The pest was found in grape plants bought at Costco. Shipments from Burchell Nursery’s Fresno County site contained the sharpshooters.
This problem shows how connected our agriculture supply chains are—and why pest management matters at every step.
Marin County Confirms the Findings
Marin County agricultural inspectors found sharpshooter nymphs in two inspection samples. The California Department of Food and Agriculture verified these findings, confirming the pest has reached local gardens from Novato to Sausalito.
Sacramento County also reported shipments with all life stages of the insect. They destroyed 160 grapevines at local Costcos.
Officials estimate hundreds of plants remain unaccounted for. Many may already be in gardens across the region.
Costco is contacting customers who bought affected plants, which should help slow the spread.
A Wider Regional Concern
This isn’t just about Marin or Sacramento. Counties like Sonoma, Solano, Yolo, and Napa have also reported infestations.
Napa County already destroyed 63 out of 220 grapevines and found an egg mass. That shows just how fast this pest could spread.
County authorities say Burchell Nursery didn’t notify affected counties before shipping, which goes against state quarantine laws. That mistake forced agricultural departments to act fast.
What You Need to Do: Immediate Actions for Marin Residents
If you live in Marin—Fairfax, San Rafael, Point Reyes Station, wherever—take action if you’ve recently bought grapevines from Costco.
If You Bought Grapevines:
- Isolate the Plants: Keep your new grapevines away from other plants and your garden. Don’t plant them yet.
- Do Not Return: Don’t bring the plants back to the store. That could spread the pest even more.
- Double Bag and Seal: Double-bag the grapevines and seal them tightly to keep anything from escaping.
If you bought citrus plants from Costco during the affected period, reach out to your county agricultural department for specific instructions.
Protecting Our Agricultural Future
County officials are rolling out new measures to fight this threat. They’re seizing and destroying infested plants.
Teams have ramped up trapping efforts to catch any lingering sharpshooters. Inspectors are also checking through mixed plant stock with extra care.
This kind of dedication matters. It’s about protecting everything from backyard gardens to big vineyards—no small task, honestly.
If we stay informed and actually follow these steps, we can do our part. Marin County’s agriculture is worth the effort, don’t you think?
Here is the source article for this story: California Officials Warn Residents Not to Plant Costco Grapevines After Invasive Pest Discovery
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