However, Scotch thistle, and other biennials, does have some capacity to regrow if it is injured, like perennial weeds, by forming multi-rosettes from buds located at the base of each leaf. Scotch ...

as Scotch thistle has spines on both the upper leaf surface and the leaf margins, whereas nodding thistle only has spines around the margins. It can be a bit difficult to distinguish from Californian ...