Cirsium occidentale, Cobweb Thistle Moist / Riparian It is best to prune

It is best to prune after flowering

Mature trees are susceptible to heartwood rot that might affect the structural integrity of the tree

It can reach a height of up to two feet tall

Commercial grade pruning tools designed for making large cuts (up to 2" cuts)

Cirsium occidentale, Cobweb Thistle Moist / Riparian It is best to pruneCobweb Thistle A California native perennial herb that can reach up to ten feet tall. This thistle grows along the coast and is not an invasive weed like other thistles. The flowers are pink, red, and purple blooming in the spring through summer. The stems are white with spines and have fibers that resemble cobwebs. Full sun to part shade Attracts butterflies Deer resistant Native to California