Photo of Cirsium Trevor's Blue Wonder (Swamp thistle)
Cirsium rivulare Trevor's Blue Wonder – It is an upright, clump-forming, herbaceous perennial with spiny, elliptic to lance-shaped, deeply divided or entire, grey-green leaves, softly hairy beneath, and erect, purple-flushed stems bearing thistle-like, magenta flower heads in mid- to late summer.
Ref. 46283
Author :
Martin Alarie
Online since:
December 19th 2023
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