Plants of the San Marcos Foothills Preserve
Cirsium vulgare (Bull Thistle)
Fairly un-common, non-native annual seen in the Cieneguitas Creek watershed. Flowers are lavender to purple. Booms in Spring.
Cirsium vulgare (bull thistle). NON-NATIVE Pictured in summer.
Cirsium vulgare (bull thistle). NON-NATIVE Pictured in summer.