A weed is a plant growing where it is not wanted. Weeds will grow in almost any lawn but they tend to be more common in lawns that have been neglected due to poor maintenance practices. The most effective way of preventing weeds is to encourage a healthy lawn with good grass coverage.
This is because weeds do not like to compete with healthy grasses, so with the correct cultural practices, many weed problems can be avoided. These cultural practices include maintaining the correct fertilizer inputs, the right mowing techniques, and carrying out mechanical operations such as aeration and scarification when necessary.
Once weeds are present in your lawn they will need removing. Some weeds which grow as individual plants can be removed by hand if they are few in number. These types of weeds include daisy, dandelion, self-heal, and plantain amongst others.
Some types of weeds because of their growth characteristics like clover and trefoil are more difficult to remove by hand and may need a chemical control. Before reaching for the sprayer and treating the whole lawn you may want to consider spot treating the weeds if the infestation is not too severe.
Small hand sprayers and aerosols containing weed killers can be purchased for spot treatment. Before any chemical control, the weeds need to be identified to ensure the correct chemical is being applied.
If the weed invasion is very severe the whole lawn will need treatment with a selective weed killer. These weed killers are available from garden centers, it is important to follow the manufacturer’s application instructions before, during, and after the application. Alternatively, you may want to enlist the services of a professional lawn care specialist for this task if you are not confident in carrying out the task yourself.