Milk thistle (Silybum marianum ... It blooms from late spring to early summer with a single pinkish-purple flower per stem. 'All parts of the plant have sharp spines, with the spines on the ...

The flowers are small, purple through lavender to white. Canada thistle spreads through seeds ... rosette the first year and a spiny, erect single stem, 2 to 5 feet tall and a large, two-inch ...

Brushing up against the razor sharp leaves of a purple thistle can leave a lasting memory ... of purple and white cylindrical flowered stems. This colorful playground attracts a host of insects ...

Its cousin, the creeping thistle, Cirsium arvense, has a soft, sappy stem that tends to snap off when you try to pull it up. It gets in under the hedges of my garden, spreading by lateral roots as ...

European marsh thistle, a terrestrial and wetland ... segments and spiny teeth along leaf margins flowers are purple, disk-shaped, and covered in spines often found with multiple flowers per stem wind ...