bull thistle :
- n European thistle with rather large heads and prickly leaves; extensively naturalized as a weed in the United States
News & Articles
- ORRIN MORRIS: Field thistle’s height can exceed six feet
One should approach all thistles with caution. This field thistle does not have spines on the stem like the bull thistle or the nodding thistle but the leaves are armed to make life miserable for intruders.
Oct. 17, 2013 - Newton Citizen