The oaks of California host a dizzying diversity of galls, the majority of which are formed by wasps in the family Cynipidae. Learn more about oak gall wasps at an upcoming workshop. (Juan Francisco ...
Invasive weeds are non-native plants that infest native habitat. Once introduced, invasive weeds spread, outcompete and eventually eliminate natives. Crabgrass, acacia trees, English ivy and Himalayan ...
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