Weed Control

Weed Control

Weeds can be one of the most frustrating and annoying problems on the garden lawn. Nothing spoils a lawn in the summertime like weeds. Weeds can be discouraged with the correct lawn care program and any damage kept to a minimum. Blue Iris Lawn Care’s Weed Control programme will frequently recommend remedial actions as well as the use of Herbicides for the initial eradication of weeds infesting a lawn.

Our Approach is to establish what if any issue(s) there are within your lawn that has contributed to any weed infestation. We will recommend a programme of remedial Lawn Care, based upon our services and make recommendations for your continuing lawn maintenance regime. As with most lawn problems preventing them in the first place should be your main goal. Weeds are primarily opportunistic and look for weak or bare areas on the surface of the lawn to establish. A sound maintenance program will help discourage weeds and prevent them invading in the first place.

Why do we get weeds in the lawn

A weed is a plant growing in the wrong place. Various broad-leaved plants are considered weeds in areas of your lawn. Weeds will grow in almost any situation where the conditions are favourable. Weeds are opportunistic and will invade where suitable conditions arise. Neglect and incorrect lawn management can result in thin or weak areas on the lawn. This creates a perfect opportunity for weeds to encroach onto your lawn.

There may be underlying reasons that favour certain weeds leading to the need for Weed Control. These reasons include

  • Excessively wet lawn resulting from:
  • Poor drainage
  • Dry lawn
  • Extreme soil pH.
  • Lack of nutrition through underfeeding
  • Mowing the lawn too short
  • For example:
    • Creeping buttercup is associated with wet conditions
    • Yarrow with undernourished soils
    • Plantains with compacted soils

Weeds will return if these conditions are not corrected even after the application of herbicides. Therefore it is important to understand what is causing the invasion in the first place.

Why control lawn weeds

The primary reason for wanting a weed free lawn is that weeds are generally unsightly and spoil the appearance of the lawn. They compete (often very successfully) with the grass for water, light, nutrients and space. They also reduce the drought resistance of the grass, as they have a larger leaf area and a higher rate of transpiration. Weeds can also affect the wear tolerance of the lawn as they do not like large amounts of traffic.

How to prevent lawn weeds

Although it is nearly impossible to totally eradicate weeds, with the correct lawn care and maintenance practices it is possible to eliminate any significant weed problems. This program should include:

  • The correct mowing techniques: Many weed problems can be reduced or eliminated by ensuring that your lawn mower is set to the correct height. Mowing a lawn to low can weaken the grass or scalp the lawn creating bare patches. This gives weeds the perfect opportunity to invade.
  • Correct fertiliser and feeding program: Feeding or fertilising the lawn at the correct times of the year will help encourage a thick healthy sward. A thick lawn is one of the best ways to discourage weeds as there is now little room for weeds to invade.
  • Correct scarifying and raking program: Scarifying your lawn is an important part of a lawn care program, to remove thatch. This creates healthy growing conditions thus reducing any weed problems.
  • Irrigation or watering during drought conditions: During periods of drought, it is important to irrigate the lawn to prevent any loss of grass though lack of water. Any loss of grass coverage through drought damage would present weeds with an ideal opportunity to invade the lawn.
  • Correct aeration program: Overtime the soil beneath your lawn can become compacted. Your lawn health can suffer because of compaction. This gives weeds the perfect opportunity to invade.
  • Worm control program: During the Autumn and other wet periods worm activity tends to be nearer the surface of your lawn thus creating worm casts. Worm casts can smother your lawn which creates the ideal seedbed for weeds to spread. Controlling worm activity will help prevent the spread of weeds.


Even using the finest herbicides available for Weed Control, and the best application methods, it is not always possible to remove all weeds in one go. There are a number of reasons for this:

  • Timing: Herbicides are only effective during a plants active growing season. Susceptibility of weeds to herbicides varies between types of weeds.
  • Coverage: To eradicate weeds they have to receive a direct spray of herbicide, but where the weed count is high, the leaves of some weeds will cover and protect others.
  • Seedbank: Seeds of various plants considered as weeds in our lawns can lie dormant waiting for the right opportunity
  • Neighbourhood: Often seeds are blown in from neighbouring locations; resulting in re-contamination of your lawn

Book Your Weed Control Treatment Today!

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