Guildford Grass

Guildford Grass.

Common name

Guildford Grass

Scientific Name

Romulea rosea

Type of plant

Bulbs or Corms

About this weed

This perennial weed renews each year from corms and is common in the South West Region especially in bushland, roadside verges, lawns and gardens and agricultural pastures. During spring bright pink flowers open at ground level and as they mature the flower stem elongates and bends over eventually allowing the seed capsule to fall to the ground. It is another southern African bulb that was probably introduced with garden plants.


It is a small plant growing to a height of about 0.25 m high. It produces numerous simple bright pink flowers. The corm is renewed annually and it reproduces by seed and corm. The time to first flowering is 2 years and the seedbank persists for up to 5 years. It will generally survive fire.

Impact on Bushland

If left may spread over bushland and impact on ecological processes and plant communities.


This weed is distributed widely across the South-West Province. Guildford Grass grows in a variety of soils including white-grey sandy loam or clay, brown-red sandy loam, gravel, laterite, granite and limestone. It is found in urban gardens, hills, on the coastal plains, roadsides and pasture land.

Priority for removal


Management (hand)

Not available.

Management (herbicide)

Spot spray metsulfuron methyl 0.2 g/15 L + Pulse® or 2.5-5 g/ha + Pulse® . Apply just on flowering at corm exhaustion. Read the manufacturers’ labels and material safety data sheets before using herbicides. Optimal months to spray are July and August.

Flowering month/s

August, September, October

Flower colour/s

Blue, Red, Pink, Purple

Information source

Additional information

Guildford 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)