Controlling Onion Grass and Onion Weed

Now is the time to control two of the most persistent turf weeds.

Onion grass and Onion Weed are two  problem weeds of turfgrass areas. Onion weed and Onion Grass (also called Guildford Grass) should be controlled now before they flower and set seed. Destiny the only herbicide registered to control these weeds in turf situations. 

Sometimes their identification is confusing. Onion grass (Romulea rosea) is also known as Guildford grass and is a turf weed across temperate areas of Australia. Onion weed (Nothoscordum sp) is a weed in Australia of turf farms and gardens. 

Distinguishing characteristics of Onion Grass and Onion Weed

Characteristic Onion Grass (Guildford grass) Onion Weed
Flower stem
Round

Round
Leaves
Rounded with longitudinal grooves

Flat (strap like)
Flowers
Pink to mauve and star shaped (rarely white)

White and bell shaped
Underground vegetative parts
Corms

Bulbs

Send an e-mail or photograph to jyri.kaapro@bayer.com if you have any experiences of turf with either of these symptoms.

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