Thistle (Bull)
Bull thistle grows 3’ to 7’ tall with one upright branched stem. Young plants grow a rosette.
Flowers: There are many, 1.5 to 2” in diameter. Purple or Pink-magenta flowers top each stem.
Leaves alternate and coarsely lobed with a spined tip. Each leaf is long with sharp spines.
Eradicate: Remove plants before flowering prevents new infestations.
Young plants: dug with shovel when in rosette or seedling stage. Removal of full root. Flowering heads: Bag and send to transfer station
Inorganic mulches such as plastic and weed barrier fabrics may also be effective.
Flowers: There are many, 1.5 to 2” in diameter. Purple or Pink-magenta flowers top each stem.
Leaves alternate and coarsely lobed with a spined tip. Each leaf is long with sharp spines.
Eradicate: Remove plants before flowering prevents new infestations.
Young plants: dug with shovel when in rosette or seedling stage. Removal of full root. Flowering heads: Bag and send to transfer station
Inorganic mulches such as plastic and weed barrier fabrics may also be effective.
