Spear thistle (back thistle, scotch thistle, bull thistle)
Cirsium vulgare
It is a tall biennial or short-lived monocarpic thistle, forming a rosette of leaves and a taproot up to 70 cm long in the first year, and a flowering stem 1–1.5 m tall in the second (rarely third or fourth) year. The stem is winged, with numerous longitudinal spine-tipped wings along its full length. The leaves are stoutly spined, grey-green, deeply lobed; the basal leaves up to 15–25 cm long, with smaller leaves on the upper part of the flower stem; the leaf lobes are spear-shaped (from which the English name derives). The inflorescence is 2.5–5 cm diameter, pink-purple, with all the florets of similar form (no division into disc and ray florets). The seeds are 5 mm long, with a downy pappus, which assists in wind dispersal.
Pesticides
Albaugh 2,4-D Amine 600 Liquid
intensity: ★★★
Arsenal
intensity: ★★★
Arsenal Powerline
intensity: ★★★
GF-871
intensity: ★★★
Milestone
intensity: ★★★
Restore B
intensity: ★★★
Restore II
intensity: ★★★
Tropotox Plus 400
intensity: ★★★
Embutox
intensity: ★★
2,4-D Ester 700
intensity: ★
2,4- D Ester 700
intensity: ★
Adrenalin SC
intensity: ★
Clearview
intensity: N/A
GF2050
intensity: N/A
GlyKamba
intensity: N/A
Restore A
intensity: N/A
Sightline A
intensity: N/A