Milk thistle (Silybum marianum ... The plant is large – up to six feet tall,' she says. 'It blooms from late spring to early summer with a single pinkish-purple flower per stem.

grows as a typical thistle rosette over winter, then develops an upright flower stem in spring, from which seed is produced and falls into the soil where it spends summer. Winged thistle looks and ...

New plants re-establish from these roots in spring, and flowering occurs in summer and autumn. It is unwanted in pasture because livestock do not like grazing too close to the spiny foliage, so ...

The best thing is to take action as soon as you see a Canada thistle spring up in your garden, before it starts killing or crowding out your plants. Common ways to banish thistle weeds from your ...