Creeping thistle (Cirsium arvense) and spear thistle (Cirsium vulgare) are two of just five weeds labelled “injurious” under The Weeds Act 1959.

The ones with small flowers are Italian thistle (Carduus pycnocephalus); those with the larger round flower are bull thistle (Cirsium vulgare). And there is some yellow-flowering star thistle ...

• Bull/spear thistle (Cirsium vulgare) leaves are dark green with deeply toothed leaf margins, thorns on leaves and stems and stiff hairs on the leaves.It also has a tap root that can be cut ...

SCOTCH or Spear thistle, proper name Cirsium vulgare, is native to Europe, Western Asia and North Africa. By Ian Read. less than 2 min read. February 12, 2016 - 6:51PM.