Ireland

Annual bluegrass (annual meadow grass)

Poa annua

Description
P. annua is an annual grass, which may persist as a short-lived perennial depending on habitat, climate and management. It is a weakly competitive weed with rapid flowering and profuse seedling.

Characteristic Features
Leaves are often transversely wrinkled with characteristic tramlines.

Young Plant
Tufted, 5 - 30 cm (1.97 - 11.81 inch) high, root at the nodes, youngest leaf folded.

Stems
Erect, in the vegetative state geniculate. Flowering culms are erect and smooth 10 - 30 cm (3.93 - 11.81 inch) tall, without hairs.

Leaves
Leaves flat, slightly keeled with characteristic 'tramlines'; smooth and abruptly contracted at the apices
('boat-shaped tip'). Transversely wrinkled.
Ligule membranous and typically 2-3(-5) mm 0.078 - 0.118 - 0.197 inch) long, often truncate or acute.
No auricles.
Sheath is smooth, keeled and somewhat compressed.

Pesticides
Accent
intensity: ★★★
Alister
intensity: ★★★
Anthem
intensity: ★★★
Aramo
intensity: ★★★
Arelon 500
intensity: ★★★
Arelon500
intensity: ★★★
ASTROKerb
intensity: ★★★
Barclay Propyzaflash
intensity: ★★★
Barclay Seismic WG
intensity: ★★★
Betanal Max Pro
intensity: ★★★
Blutron
intensity: ★★★
Blutron Plus
intensity: ★★★
Butisan S
intensity: ★★★
Buzzin
intensity: ★★★
Buzzin.
intensity: ★★★
Calaris
intensity: ★★★
Careca
intensity: ★★★
CIPC
intensity: ★★★
Collage
intensity: ★★★
Defy
intensity: ★★★
Devrinol
intensity: ★★★
Dual Gold
intensity: ★★★
Elumis
intensity: ★★★
Emerger
intensity: ★★★
Ethosat 500
intensity: ★★★
Farmco IPU
intensity: ★★★
Fieldguard
intensity: ★★★
Firebird
intensity: ★★★
Flight
intensity: ★★★
Glyfos Supreme.
intensity: ★★★
Goltix 70 SC
intensity: ★★★
Hussar
intensity: ★★★
Judo
intensity: ★★★
Kerb Flo
intensity: ★★★
Kerb Granules
intensity: ★★★
Kyleo
intensity: ★★★
Legion
intensity: ★★★
Most Micro
intensity: ★★★
PDM 330 EC
intensity: ★★★
Proman
intensity: ★★★
Proper Flo
intensity: ★★★
Proper Flo.
intensity: ★★★
Rapport 500 SC
intensity: ★★★
Rapport 500SC
intensity: ★★★
Relva
intensity: ★★★
Sencorex Flow
intensity: ★★★
Shotput
intensity: ★★★
Stomp 400 SC
intensity: ★★★
Stomp Aqua
intensity: ★★★
Titus
intensity: ★★★
TouchdownQuattro
intensity: ★★★
Trilogy.
intensity: ★★★
Trilogy
intensity: ★★★
Unichem IPU 500
intensity: ★★★
Venzar Flowable
intensity: ★★★
Wing P
intensity: ★★★
Afalon Liquid
intensity: ★★
Digital
intensity: ★★
Farmco Maize
intensity: ★★
Sumimax
intensity: ★★
Wizard
intensity: ★★
Barclay D-Quat
intensity: ★
Basagran SG
intensity: ★
Benta 480 SL
intensity: ★
Chikara Weed Control
intensity: ★
Di Quattro
intensity: ★
Diqua
intensity: ★
Diquash 200 SL
intensity: ★
Acorn Barbarian
intensity: N/A
Ardee
intensity: N/A
Asteroid
intensity: N/A
Barclay Gallup 360
intensity: N/A
Barclay Gallup Biograde 360
intensity: N/A
Barclay Gallup Biograde 450
intensity: N/A
Barclay Gallup Hi-Aktiv
intensity: N/A
Barclay Keeper 500
intensity: N/A
Barclay Propyz
intensity: N/A
Centurion Max
intensity: N/A
Clearall 360
intensity: N/A
Envision
intensity: N/A
Falcon
intensity: N/A
Farmco Glyphosate
intensity: N/A
G360
intensity: N/A
Glyfos Dakar
intensity: N/A
Glyfos Supreme
intensity: N/A
GlyphoFIT 36 SL
intensity: N/A
Glyphosate 360
intensity: N/A
Glyweed
intensity: N/A
Hy-Glo 360
intensity: N/A
Lingo
intensity: N/A
Master Gly 36T
intensity: N/A
Pacifica
intensity: N/A
Rattler
intensity: N/A
Rosate 36
intensity: N/A
Rosate Green
intensity: N/A
Roundup Flex
intensity: N/A
Scutchout Plus
intensity: N/A
Symbol
intensity: N/A
Tumbleweed
intensity: N/A
Vesuvius
intensity: N/A
Vival
intensity: N/A