Vineyard Alert: Glassy-Winged Sharpshooter Spreads to North Bay Costco Stores
Marin County agricultural officials are sounding the alarm after a major pest, the glassy-winged sharpshooter, showed up on grapevine plants at a local Costco. This impacts plants sold throughout the North Bay, including Novato, and has people worried about our region’s wine grape industry and the wider landscape plant business.
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The infected vines came from a nursery in Fresno. County inspectors jumped into action, urging residents across Marin County and nearby communities to stay alert.
The Threat to Our Vineyards: Understanding the Glassy-Winged Sharpshooter
Glassy-winged sharpshooter nymphs were found on grapevine plants at Costco stores across the North Bay. This is a big deal that needs everyone’s attention right now.
These invasive bugs threaten the health of vineyards and landscape plants. They could seriously harm the agricultural backbone of our region.
What is the Glassy-Winged Sharpshooter and Why is it a Concern?
The glassy-winged sharpshooter is a nasty insect that spreads deadly plant diseases. It feeds on plant fluids with sharp, needle-like mouthparts.
This feeding drains and damages trees and vines. For places like Marin, Sonoma, and Napa, the real worry is its ability to carry diseases that can kill grapevines and hurt the quality of our wines.
The Spread and Detection in the North Bay
Inspectors from the Marin County Agriculture Commissioner’s office moved quickly when they found the nymphs on grapevine plants bought from Costco. These plants, meant for ornamental use, came from Burchell Nursery in Fresno.
Finding this pest in local retail stores, especially in Novato, is alarming. Agriculture means a lot to our area, both economically and culturally.
Novato Costco Incident and Wider Regional Impact
In Novato, county staff destroyed 68 infected plants from the Costco nursery. They also set up insect traps around the store, but didn’t find any more sharpshooters in the parking lot.
This just shows how vulnerable even big retail stores are to invasive species sneaking in. Sonoma and Napa counties got similar warnings, since they also received vines from Burchell.
Napa County crews destroyed 63 out of 220 plants and found one egg mass. There are still about 157 plants that haven’t been accounted for, which is a bit unsettling if you ask me.
Protecting Marin’s Agribusiness: A Collaborative Effort
Marin County doesn’t have as many vineyards as its famous neighbors, but its 143 acres of vines still matter. Compare that to Sonoma’s 60,000 acres and Napa’s 40,000, and you get the picture.
Damage to these agricultural sectors—or to the ornamental plant businesses in towns like Tiburon, Sausalito, and Mill Valley—could hit hard. It’s going to take teamwork to deal with this.
Legal Requirements and Official Guidance
California law says nurseries must check grapevines for glassy-winged sharpshooters before shipping them. The insect’s been hanging around Central California since the 1990s, so everyone needs to stay on their toes.
Marin County Agriculture Commissioner Joe Deviney said tracking down locally purchased plants is a top priority. Costco’s been helpful, working to notify customers who might have bought these possibly contaminated vines from their Novato store.
What Residents Can Do
Residents in Novato and nearby areas who bought leafed-out grapevine plants from Costco should act fast to help stop this pest from spreading. The best thing to do is seal the plants tightly in two garbage bags.
Don’t throw them away or move them around until county officials have a chance to check them out. This step makes it much harder for the pest to get loose in our local environment.
If you think you might have one of these plants, just call the Marin County Agriculture Commissioner’s office at 415-473-7888. They’ll know what to do and can walk you through the next steps.
Honestly, your help really matters for keeping Marin County’s farms—and the scenery—safe. We all want to keep this place beautiful and thriving.
Here is the source article for this story: Marin County warns of harmful insects on grapevines
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