Ireland

Common knotgrass

Polygonum aviculare

Description

Common knotgrass is an annual herb with a semi-erect stem that may grow to 10 to 40 cm (4 to 16 in) high. The leaves are hairless and short-stalked. They are longish-elliptical with short stalks and rounded bases; the upper ones are few and are linear and stalkless. The stipules are fused into a stem-enclosing, translucent sheath known as an ochrea that is membranous and silvery. The flowers are regular, green with white or pink margins. Each has five perianth segments, overlapping at the base, five to eight stamens and three fused carpels. The fruit is a dark brown, three-edged nut. The seeds need light to germinate which is why this plant appears in disturbed soil in locations where its seeds may have lain dormant for years.

Pesticides
Anthem
intensity: ★★★
ASTROKerb
intensity: ★★★
Barclay Propyzaflash
intensity: ★★★
Barclay Seismic WG
intensity: ★★★
Betanal Max Pro
intensity: ★★★
BiPlay SX
intensity: ★★★
Butryflow
intensity: ★★★
Buzzin.
intensity: ★★★
CIPC
intensity: ★★★
Clove X
intensity: ★★★
Clovermax
intensity: ★★★
Debut
intensity: ★★★
Devrinol
intensity: ★★★
Ergon
intensity: ★★★
Ethosat 500
intensity: ★★★
Farmco Beet-Clean
intensity: ★★★
Farmco Lenzo Flo
intensity: ★★★
Farmco Tuskar
intensity: ★★★
Finish SX
intensity: ★★★
Flight
intensity: ★★★
Foundation
intensity: ★★★
Harmony M SX
intensity: ★★★
Harmony Max SX
intensity: ★★★
High Load Mircam
intensity: ★★★
Hussar
intensity: ★★★
Judo
intensity: ★★★
Kerb Flo
intensity: ★★★
Kyleo
intensity: ★★★
Mircam Super
intensity: ★★★
Mitron WG
intensity: ★★★
Most Micro
intensity: ★★★
Nirvana
intensity: ★★★
PDM 330 EC
intensity: ★★★
Presite Max SX
intensity: ★★★
Presite SX
intensity: ★★★
Proper Flo
intensity: ★★★
Proper Flo.
intensity: ★★★
Pyramin DF
intensity: ★★★
Relva
intensity: ★★★
Safari Lite WSB
intensity: ★★★
Sencorex Flow
intensity: ★★★
Spotlight Plus
intensity: ★★★
Tomahawk
intensity: ★★★
Trilogy.
intensity: ★★★
Trilogy
intensity: ★★★
Wing P
intensity: ★★★
Ally Express
intensity: ★★
Ally Ultra
intensity: ★★
Basagran
intensity: ★★
Benta 480 SL
intensity: ★★
Buzzin
intensity: ★★
Cadou Star
intensity: ★★
Careca
intensity: ★★
Compitox Plus
intensity: ★★
D50
intensity: ★★
Duplosan KV
intensity: ★★
Duplosan Super
intensity: ★★
Embutone
intensity: ★★
Emerger
intensity: ★★
Farmco Rebel XT
intensity: ★★
Farmco Undersown
intensity: ★★
Finy
intensity: ★★
Goltix 70 SC
intensity: ★★
Kerb Granules
intensity: ★★
Legumex DB
intensity: ★★
Mastercrop Undersown
intensity: ★★
Pelican Delta
intensity: ★★
Proman
intensity: ★★
Salvo
intensity: ★★
Savvy
intensity: ★★
Savvy Premium
intensity: ★★
Shotput
intensity: ★★
Stomp 400 SC
intensity: ★★
Stomp Aqua
intensity: ★★
Totril
intensity: ★★
Twinprop.
intensity: ★★
Venzar Flowable
intensity: ★★
Agroxone 50
intensity: ★
Basagran SG
intensity: ★
Butisan S
intensity: ★
DyWeed 50
intensity: ★
Easel
intensity: ★
Elumis
intensity: ★
Katamaran
intensity: ★
M50
intensity: ★
Rapport 500 SC
intensity: ★
Rapport 500SC
intensity: ★
Titus
intensity: ★
Tropotox
intensity: ★
Alpha Bromotril P
intensity: N/A
Arbiter
intensity: N/A
Bacara
intensity: N/A
Barclay Hudson
intensity: N/A
Barclay Hurler
intensity: N/A
Barclay Keeper 500
intensity: N/A
Binder.
intensity: N/A
Damine
intensity: N/A
Farmco Floxxy
intensity: N/A
Flurostar 200
intensity: N/A
Flurox 200
intensity: N/A
GAT Stake 20 EC
intensity: N/A
Hatchet Xtra
intensity: N/A
Hyflux
intensity: N/A
Lingo
intensity: N/A
Metro 20
intensity: N/A
Oxytril CM
intensity: N/A
Sempra
intensity: N/A
Sniper
intensity: N/A
Starane 2
intensity: N/A
Starane Hi-Load HL
intensity: N/A
Stellox
intensity: N/A
Stride DFF
intensity: N/A