Ireland

Sow thistle (Smooth sow thistle, Annual sow thistle, Hare's colwort, Hare's this)

Sonchus oleraceus

Description
Annual, lactiferous, seed-propagated weed with strong, cone-shaped taproot. S. oleraceus produces latex and is a preferred feed for birds, chicken and geese.

Characteristic Features
Flower heads light yellow to greenish yellow (Sonchus arvensis: intensive yellow). Leaves and stems contain milky sap. Soft, floppy, shiny, greasy, bluegreen leaves.

Young Plant
Round, often flatly sinuate in front, light green, entire, petiolate.

Stems
Erect, thick, ramified, up to 80 cm-100 cm (2.62 - 3.28 ft) high.

Leaves
First leaves nearly circular, with fine teeth; following leaves runcinate-pinnatifid or undivided, soft, blue-green, enclosing the stalk sagittately, prickly dentate.

Pesticides
Ally Express
intensity: ★★★
Anthem
intensity: ★★★
Cliophar 100
intensity: ★★★
Cliophar 600 SL
intensity: ★★★
Clove X
intensity: ★★★
Clovermax
intensity: ★★★
Dow Shield 100
intensity: ★★★
Dual Gold
intensity: ★★★
Ethosat 500
intensity: ★★★
Farmco Rebel XT
intensity: ★★★
Farmco Tuskar
intensity: ★★★
Finy
intensity: ★★★
Flight
intensity: ★★★
Foundation
intensity: ★★★
Mitron WG
intensity: ★★★
Most Micro
intensity: ★★★
PDM 330 EC
intensity: ★★★
Pelican Delta
intensity: ★★★
Retro
intensity: ★★★
Savvy Premium
intensity: ★★★
Sencorex Flow
intensity: ★★★
Stomp 400 SC
intensity: ★★★
Stomp Aqua
intensity: ★★★
Venzar Flowable
intensity: ★★★
Vivendi 200
intensity: ★★★
Afalon Liquid
intensity: ★★
Agroxone 50
intensity: ★★
Basagran SG
intensity: ★★
Benta 480 SL
intensity: ★★
Compitox Plus
intensity: ★★
D50
intensity: ★★
Duplosan KV
intensity: ★★
DyWeed 50
intensity: ★★
Easel
intensity: ★★
Farmco Undersown
intensity: ★★
Legumex DB
intensity: ★★
M50
intensity: ★★
Mastercrop Undersown
intensity: ★★
Tropotox
intensity: ★★
Twinprop.
intensity: ★★
Wing P
intensity: ★★
Chikara Weed Control
intensity: ★
CIPC
intensity: ★
Devrinol
intensity: ★
High Load Mircam
intensity: ★
Judo
intensity: ★
Pyramin DF
intensity: ★
Relva
intensity: ★
Beet Shield
intensity: N/A
Blaster PRO
intensity: N/A
Careca
intensity: N/A
Damine
intensity: N/A
DB Plus
intensity: N/A
Diquash 200 SL
intensity: N/A
Hempacide 30
intensity: N/A
Hygrass
intensity: N/A
Lingo
intensity: N/A
Metro 20
intensity: N/A
Mission 200 SL
intensity: N/A
Sempra
intensity: N/A
Stride DFF
intensity: N/A
Undersown
intensity: N/A