Weeds

 

While some people often think that at least the weeds are patches of green colour within their lawn, you need to be aware that they compete do with the grass species for light, nutrients and water and their presence is often to the detriment of your turf. They are also very soft and collapse under nearly any wear, and can be slippery and dangerous to the people and children using the lawn. 

When controlling weeds, make sure you spray while the weeds are growing actively. The chemicals work by disrupting particular processes within the plant. When the plant is growing actively, the distribution of the chemical throughout the plant occurs efficiently and the cellular processes that the chemical affects are occurring at a high rate. Therefore at this time the best results will be achieved. To further ensure the best results possible, don't mow the weeds you intend to spray from at least 3 or more days before and after herbicide application and don't fertilise in the 2-week (or greater) period before or after the herbicide application. 

As mentioned previously, make sure you minimise the drift from your herbicide spray so that you don't harm other plants in your, or your next-door neighbour's, yard. Also be aware that some chemicals you may want to use to control any weeds in your lawn will also kill your turf, so be particularly careful to apply the herbicide as selectively as possible.

 

Turfgrass Weeds

Below we have provided a range of turfgrass weeds which can be found within warm- and or cool-season turfgrasses. Included within each weed thumbnail are technical descriptors and control options for both the home owner and professional sports turf ground manager or superintendent.

Cyperus rotundus

Nutgrass

 

Ageratum conyzoides

Billygoat weed

 

Eleusine indica

Crowsfoot

 

Bothriochloa pertusa

Indian bluegrass

 

Stachytarpheta jamaicensis

Blue snake weed

 

Plantago lanceolata

Lambs tongue

 

Hedyotis corymbosa

Old World Diamond Flower

 

Cyperus brevifolius

Mullumbimby couch

 

Oxalis corniculata

Creeping oaxlis

 

Paspalum dilatatum

Paspalum dilatatum

 

Digitaria spp.

Summer grass

 

Portulaca oleracea

Pigweed

 

Urochloa piligera

Hairy armgrass

 

Taraxacum officinale

Dandelion

 

Urochloa panicoides

Liverseed grass

 

Gomphrena celosioides

Gomphrena weed

 

Poa annua

Poa

 

Trifolium repens

Clover

 

Emilia sonchifolia

Emilia

 

Paspalum distichum

Water couch

 

Stellaria media

Chickweed

 

Eragrostis tenuifolia

Wiregrass

 

Polygonum heterophyllum

Wireweed

 

Hypochoeris radicata

Catsear

 

Malva spp.

Mallow

 

Cotula australis

Carrot weed

 

Bidens pilosa

Cobbler's pegs

 

Indigofera spicata

Creeping indigo

 

Soliva sessilis

Bindi

 

Capsella bursa-pastoris

Shepherds Purse

 

Medicago polymorpha

Burr medic

 

Portulaca oleracea

Pink purslane

 

Cardamine hirsuta

Flickweed