Under the Solano Sun

yellow sunflower closeup picture

Seasonal observations by UC Master Gardeners of Solano County

Blue Oak (Quercus douglasii) Companion Plants

June 26, 2026
By Pamela Muick
Blue oak, our most drought-tolerant native oak, grows throughout Solano and Yolo counties. In nature, blue oaks are mostly found on sunny, well-drained soils: “the wettest of the dry places and the driest of the wet places.” Nearby Rockville Hills Regional Park (Fairfield) and Lagoon Valley (Vacaville)…
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Revisiting Worm Farming

June 24, 2026
By Tina Saravia
When I first got my city-subsidized $10 worm condo some years back (many years back), I got really excited about worm farming. Back then, we just called it worm composting. The only book of “authority” was “Worms Eat My Garbage” by Mary Appelhoff. I learned from the book the term “vermicomposting,” and most…
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In the Weeds

June 24, 2026
By Akiko Ogura
This past week I have seen up to four monarch caterpillars and yesterday, there were none. At the beginning of the week, I was doing my daily count and there was a good-sized lizard attempting to eat one of the larger caterpillars. Lizards are known predators. I came to the rescue on that day and scared them…
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Got Milkweeds?

June 15, 2026
By Akiko Ogura
At the end of May, there were a few monarch butterflies fluttering among my milkweeds. Five narrowleaf milkweed plants and five years later, I now have two good-sized patches of them. Then we had heavy rains and gusty wind conditions in Fairfield, which was concerning for the eggs and larvae. The milkweeds…
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