Sow thistle is commonly found in crops, gardens and waste areas. As with many members of the Asteraceae family, it starts life as a rosette, and then bolts to form an upright flower stem. Sow thistle ...

Identifying features include: typically grows 2-7 feet tall leaves are alternate with deeply pinnate segments and spiny teeth along leaf margins flowers are purple, disk-shaped, and covered in spines ...

One of the weeds nearly everyone recognizes is the thistle. There are numerous thistles but the ones that make the Prohibited Weed List in Minnesota are the Canada thistle and the plumeless ...