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Article: Winter Grass

Winter Grass
Weed Identification >

Winter Grass

Common Name

Winter Grass

Scientific Name

Poa Annua

Family

Poaceae

Lifecycle

"Both annual and perennial forms of ‘Poa annua’ reproduce by seed, while perennial types can spread by short stolons. The annual type can complete its lifecycle in approximately 2 months."

Seasons of Growth

"Poa annua is a widespread environmental weed that thrives in temperate to sub temperate climates, but can extend well beyond these limits to be a problem in tropical managed turfs."

Key Distinguishing Feature

"‘Poa annua’ is fast growing in comparison to other turf species, therefore the lime green foliage, and inflorescence if developed, will generally stand taller and provide a contrasting colour to the desired turf canopy."

Culms (stems) of the ‘Poa annua’ plant can be up to 30cm if left unmown. The soft, narrowly linear, flat, smooth leaves are up to 3.5 mm wide. Foliage is often lime green in colour for the annual types and darker green in colour for the perennial.

Commonly ‘Poa annua’ can produce multiple to several inflorescence (panicles), which can grow up to 7 cm if left unmown.

Key Products for Control:

Poachek - 15mL/100sqm *Not safe for Kikuyu, or Fescue lawns

Tribute - 15mL/100sqm *Not safe for QLD Blue Couch and Kikuyu lawns

Duke 100WG - 1.5g/100sqm (Suppression Only) *Not safe for QLD Blue Couch, Fescue, Bentgrass, or Ryegrass lawns

For 6-months weed germination prevention, we recommend Pre-Emergent Herbicides, such as; Spartan, Barricade, or Onset.

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