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.

African lovegrass

Eragrostis curvula


Asthma plant

Euphorbia hirta


Awnless barnyard grass

Echinochloa colona


Bahia grass

Paspalum notatum


Billygoat weed

Ageratum conyzoides



Soliva sessilis


Black medic

Medicago lupulina


Blue heliotrope

Heliotropium amplexicaule


Blue snake weed

Stachytarpheta jamaicensis


Burr medic

Medicago polymorpha



Arctotheca calendula


Carrot weed

Cotula australis



Hypochoeris radicata



Stellaria media



Trifolium repens


Cobbler's pegs

Bidens pilosa


Creeping indigo

Indigofera spicata


Creeping oaxlis

Oxalis corniculata



Eleusine indica



Gnaphalium spp.



Taraxacum officinale



Emilia sonchifolia



Senecio madagascariensis


Flaxleaf fleabane

Conyza bonariensis



Cardamine hirsuta


Gomphrena weed

Gomphrena celosioides


Green amaranth

Amaranthus viridis


Hairy armgrass

Urochloa piligera


Indian bluegrass

Bothriochloa pertusa


Khaki Weed

Alternanthera pungens


Lambs tongue

Plantago lanceolata


Lilac oxalis

Oxalis debilis


Liverseed grass

Urochloa panicoides


Long Storksbill

Erodium botrys



Malva spp.


Mexican poppy

Argemone ochroleuca


Milk thistle

Sonchus oleraceus



Bryophyllum spp.


Mouse-ear chickweed

Cerastium glomeratum


Mullumbimby couch

Cyperus brevifolius



Cyperus rotundus


Old World Diamond Flower

Hedyotis corymbosa


Paspalum dilatatum

Paspalum dilatatum



Sagina procumbens



Portulaca oleracea


Pink purslane

Portulaca oleracea



Poa annua


Red caustic weed

Euphorbia prostrata


Rhodes grass

Chloris gayana



Richardia Humistrata



Lolium spp.


Scarlet Pimpernel

Lysimachia arvensis


Sensitive plant

Mimosa pudica


Shepherds Purse

Capsella bursa-pastoris


Slender celery

Cyclospermum leptophyllum


Summer grass

Digitaria spp.


Three-flower beggarward

Desmodium triflorum


Turnip weed

Rapistrum rugosum


Water couch

Paspalum distichum


White root

Lobelia purpurascens


Wild radish

Raphanus raphanistrum



Eragrostis tenuifolia



Polygonum heterophyllum