How To Control Weeds
Best practice to control weeds recommends a combination of treatment methods and timing for efficient control.
They are a number of manual methods of controlling weeds including hand weeding, hoeing, forking, rotavating, using mulches or even a flame gun. Best practice recommends a combination of treatment methods and timing for efficient control. Weedkillers combined with methods like digging and mulching will often guarantee the best results. Weedkillers generally offer a convenient means of control and are in many cases, the single most time and cost effective option in the war against weeds!
They are four main methods of action and some weedkillers combine more than one.
1. Contact Weedkillers
These destroy everything they come into contact with above ground, giving rapid control. They cause weeds to become brown and dry within days of treatment. Excellent for tackling annual weeds.
2. Systemic Weedkillers (also known as translocated)
These are absorbed through the leaves or roots into the sap stream and are circulated around the whole weed. They kill the entire weed, including the roots, within weeks and are effective on both annuals and perennials.
3. Residual Weedkillers
These remain active in the soil, affecting weed seeds as they germinate and grow. They therefore help to prevent new annual or perennial weed growth and often give control for several months.
4. Selective Weedkillers
These kill certain types of plants only, without harming others. They can tackle weeds without causing damage to surrounding desirable plants and are particularly suited to weeds on lawns where they kill the broad leaved weeds without harming the grass.