Published on: September 27, 2017

Dyer's woad. (S. Orloff)
Invasive plants—plants that can disperse, establish, and spread without human assistance or disturbance—pose a serious problem in California's waterways, wildlands and rangelands. Common garden weeds, unlike invasive plants, don't generally thrive outside of cultivation.
About 1,500 non-native plant species are currently established in California, mostly in wildlands. Almost two thirds were intentionally introduced as ornamentals from the nursery industry, or for the purposes of soil stabilization, animal forage, human food, fiber or medicinal plants.
Invasive plants originally introduced as desirable ornamentals include pampasgrass, big periwinkle, and water hyacinth. Dyer's woad was once a valuable dye...
Tags: DiTomaso (7), invasive plants (2), Kyser (3), nursery (9), Orloff (1), ornamentals (4), Stapleton (2), UC IPM (373), Wilen (12)
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