Loose Leaves for this summer
Summer in the garden moves fast—and so do the updates. From can’t-miss events to helpful tips and timely reminders, here’s a round-up of noteworthy bits and pieces to keep you informed, inspired, and one step ahead in the dirt.
1. Tree Alert: Invasive Beetle Spreading Closer to Contra Costa
The Mediterranean Oak Borer, a destructive beetle that targets and kills stressed valley oaks, was recently detected in Novato—and it’s spreading quickly across Northern California.
Be on the Lookout for These Warning Signs:
- Sparse or stunted leaf growth
- Fine sawdust (boring dust) around the trunk or base
- Oozing sap from small holes in the bark
Take Immediate Action:
- Do not transport firewood or green waste—this spreads the beetle
- Destroy infested wood on-site to prevent further infestation
Valley oaks in Contra Costa County are at serious risk. Your awareness and quick action can help protect them.
Read the full news article
Learn more about the Mediterranean Oak Borer from UCANR
2. Update for Aspiring Master Gardeners in Contra Costa County
Our Recruitment Team recently wrapped up the fourth and final Information Session on Saturday, June 21st. More than 100 interested residents attended, and applications have already started coming in, which shows just how much enthusiasm there is in our community for gardening, learning, and giving back.
If you missed this year’s information sessions, don’t worry—we’ll be hosting them again next summer for the Class of 2027. Keep it on your radar!
Read more
3. Good Bugs, Big Impact: The Secret World of Biological Control (Part 1)
UCANR Statewide Blog recently posted this article on biological control. This one’s a great summer read—and yes, it goes way beyond the backyard ladybug release party.
4. Summer Garden & Landscape Checklist
The garden doesn’t take time off, so neither can you. Summer is when everything grows—especially the to-do list.
5. The Water Conservation Garden
Our new demonstration garden in El Cerrito started a Summer Speaker Series on the 4th Saturday of July, August, and September from 11 AM to 12 PM
6. Upcoming Webinar: Climate Change and Your Garden
on Tuesday, July 15, 6:00 - 7:30 pm
Go to the webinar page for more info and to sign up
7. Fun Summer Dates to Remember
July 14 - Be Nice to Bugs Day
July 19 - Urban Beekeeping Day
July 28 - World Nature Conservation Day
Aug 4 - National Farmers Market Week
Aug 9 - International Day of the World’s Indigenous People
Aug 24-25 - International Bat Night
Aug 29 - More Herbs, Less Salt Day
Aug 31 - Diatomaceous Earth Day