Canada thistle (Cirsium arvense) is a creeping perennial broadleaf that is native to the Mediterranean area. It spreads ...

And, for unlucky home gardeners, in garden beds or lawns. Unlike similar thistles like Canadian thistle, bull thistle doesn't have rhizomes (spreading roots); it spreads solely by seed.

Canada thistle can sprout from its abundant seeds and underground roots which can spread 15 feet wide. Seeds may live for 20 ...