Thistle Milkweed. Distinguishing features milk thistle is a stout biennial or annual plant that grows up to one metre tall and has a branched stem. Silybum marianum has other common names including cardus marianus milk thistle blessed milkthistle marian thistle mary thistle saint mary s thistle mediterranean milk thistle variegated thistle and scotch thistle though not to be confused with onopordum acanthium this species is an annual or biennial plant of the family asteraceae this fairly typical thistle has red to purple flowers.
Milkweed is a brightly flowering plant that attracts a plethora of fauna whereas milk thistle is an invasive weed that can take over poorly tended fields and roadsides and has become a nuisance in the western regions of north america. What is milk. Some people also call it mary thistle and holy thistle.
Milkweed is a brightly flowering plant that attracts a plethora of fauna whereas milk thistle is an invasive weed that can take over poorly tended fields and roadsides and has become a nuisance in the western regions of north america.
Unlike milkweed that grows in the spring and blooms in the middle of summer milk thistle grows in the summer and blooms just as the season is ending in most climates. Milkweed is a brightly flowering plant that attracts a plethora of fauna whereas milk thistle is an invasive weed that can take over poorly tended fields and roadsides and has become a nuisance in the western regions of north america. Milkweed and milk thistle are not the same plant. Distinguishing features milk thistle is a stout biennial or annual plant that grows up to one metre tall and has a branched stem.