Canada

Sowthistle

Sonchus spp.

Most of the species are annual herbs, a few are perennial, and a few are even woody.
Annual herbs in the genus are known as sow thistles (less commonly hare thistles or hare lettuces). The genus is named after the Ancient Greek for such plants. All are characterized by soft, somewhat irregularly lobed leaves that clasp the stem and, at least initially, form a basal rosette. The stem contains a milky latex. Flower heads are yellow and range in size from half to one inch in diameter; the florets are all of ray type.

Pesticides
2,4-D Ester 700
intensity: ★★★
Accurate
intensity: ★★★
Adrenalin SC
intensity: ★★★
Glyfo Silvi
intensity: ★★★
Paradigm
intensity: ★★★
Spectrum A
intensity: ★★★
Spectrum B
intensity: ★★★
Target
intensity: ★★★
Target DS
intensity: ★★★
Tordon 22K
intensity: ★★★
Touchdown IQ
intensity: ★★★
Touchdown Total
intensity: ★★★
Traxion
intensity: ★★★
Triton C
intensity: ★★★
Tundra
intensity: ★★★
Attain XC B
intensity: ★★
MCPA 2 EH Ester 600
intensity: ★★
MCPA Ester 500 LV
intensity: ★★
Nimble
intensity: ★★
Nimble WSB
intensity: ★★
Ally 20 SG
intensity: ★
Ally Herbicide Dry Flowable 60
intensity: ★
Broadband
intensity: ★
CS-100-3317
intensity: ★
DB-8454
intensity: ★
Frontline XL
intensity: ★
Harmony Broadleaf
intensity: ★
Metsulfuron Methyl EUP
intensity: ★
OcTTain XL
intensity: ★
Pixxaro A
intensity: ★
PrePass FLEX
intensity: ★
PrePass XC A
intensity: ★
PrePass XC B
intensity: ★
Retain B
intensity: ★
Stellar B
intensity: ★
Viper ADV
intensity: ★
Amitrol 240
intensity: N/A
Boost M
intensity: N/A
Carnival 540
intensity: N/A
Clopyralid
intensity: N/A
Credit
intensity: N/A
Crush'R 480
intensity: N/A
Crush'R 540
intensity: N/A
Crush'R Plus
intensity: N/A
Deploy 75 DF
intensity: N/A
DPX-R9674 50 SG
intensity: N/A
Fluroxypyr 180
intensity: N/A
Glyphogan Plus
intensity: N/A
Inferno WDG
intensity: N/A
Korrex A
intensity: N/A
Korrex B
intensity: N/A
Mana Florasulam NC
intensity: N/A
Nufarm Boost
intensity: N/A
Nufarm Fluroxypyr
intensity: N/A
Nufarm Glyphosate 360
intensity: N/A
PP-3317
intensity: N/A
PP-Q52-105
intensity: N/A
Prestige XC A
intensity: N/A
Prestige XC B
intensity: N/A
Prestige XL
intensity: N/A
Refine Extra 75 DF
intensity: N/A
Refine Extra 75 Toss-N-Go
intensity: N/A
Refine SG
intensity: N/A
Refine SG Toss-N-Go
intensity: N/A
Retain A
intensity: N/A
Traxos Two Broadleaf Component
intensity: N/A
Triton C 75 DF
intensity: N/A
XRM-5171
intensity: N/A