Blowfly Grass

Blowfly Grass.

Common name

Blowfly Grass

Scientific Name

Briza maxima 

Type of plant

Grasses (Family Poaceae)

About this weed

Originally a native of north Africa, temperate western Asia, southeastern and southwestern Europe it was probably introduced as a seed contaminant in crops and as an ornamental plant.


This grass is an annual, tufted grass growing to 0.6 m high with a loose cluster of small shivering spikelets.

Impact on Bushland

The seedbank persistence is medium, up to 3 years. Fire promotes the germination of soil-stored seed.


Widely distributed in the South-West Province on sandy, loam and clay soils.

Priority for removal

Unknown: if established can impact native plant communities.

Management (hand)

Try to prevent seed set. If germinated hand pull during winter and early spring.

Management (herbicide)

Spray at 3-5 leaf stage with Fusilade® Forte at 16 ml/10 L or 800 ml/ha (based on 500 L water/ha) + wetting agent or for generic fluazifop-p (212g/L active ingredient) 10ml/10L or 500ml/ha + wetting agent. Read the manufacturers’ labels and material safety data sheets before using herbicides. Usually best sprayed in July and August. Repeat treatment for 2 – 3 years.

Flowering month/s

September, October

Flower colour/s

Green, Purple

Information source

Additional information

Hussey, B.M.J., Keighery, G.J., Dodd, J., Lloyd, S.G. and Cousens, R.D. (2007) Western weeds. A guide to the weeds of Western Australia, Second Edition, The Weeds Society of Western Australia, Victoria Park, Western Australia.

Blowfly Grass images


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Urban Bushland Council WA Inc

2 Delhi Street West Perth WA 6005

PO Box 326 West Perth WA 6872

(08) 9420 7207 (please leave a message)