If you have a lot of weeds in your lawn, now is the time to think about controlling the weeds in your lawn.
You normally get two periods of weed activity in a normal year. The broadleaf weeds such as Cat’s Ear, Plantains, Daisies, Dandelions to name a view of them will easily over winter in the turf. These need to be killed early on before the second turf weed season starts when you get the Red, White Clovers, Yellow Suckling Clovers and Trefoils appearing in around May / June time.
I was asked over the weekend by a lawn owner why selective herbicides kill weeds and not the grass. I told him that the biological make up of weeds and grasses is different. The weeds, like trees and shrubs have Cambium Cells. These cells provide support in the main trunk and branches of the tree or weed. The selective weed killer is a growth hormone that mimics the actual growth hormone ‘Gibberellin’ – the plant hormone responsible for secondary thickening. The selective turf herbicide is absorbed by the weeds and after a while, the weeds go into super growth, with their stems twisting and distorting. The weeds actually outgrow themselves and when their overall structure has literally had it, they die. Grasses do not have Cambium Cells so although they might absorb some of the chemical, it has no affect – if applied correctly in the first place!
We have lots of Selective Lawn Weed Killer available in The Lawn Shop to send out to lawn owners. Popular products such as Weedol / Verdone / Lawn Clear 2.
Do not apply to newly seeded lawns or new turf. Read the Product Label prior to use.
You may like to add a Spray Indicator Dye – Indigo Garden Spray Dye to help you see where you have sprayed to make the task easier, more accurate and pose less risk of over application.