Feeding and improving your lawns surface drainage
Spring or autumn are the best times to start to improve your lawn.
First, start by spiking with a lawn spiker or a fork. If your lawn is an average size it’s often best to spend a bit of time and effort to spike the lawn with a garden fork. Pushing the fork in as far as it will go and then slightly pulling back to create some deep holes in the lawn. The fertilizer the lawn with some Growmore fertilizer about a handful per metre. Next, the rain or you watering the lawn will wash the fertilizer down the holes. Until the fertilizer is washed down into the holes do not mow your lawn.
This action of spiking and feeding will produce a deeper-rooted lawn as the roots grow down the side of the holes created by the spiking to reach the fertilizer you applied.
Lawn with a wet surface
Unless your garden suffers from a drainage problem a wet lawn is likely to be caused by a heavy clay soil or a solid layer of soil-forming a pan or imperious layer 100 to 150mm down in the soil.
First dig down in a small section of the lawn to check the soil has not formed an imperious layer. If it has you will be able to see the pan in the soil and the soil below the plan will be dry and crumbly.
If the wet surface is not caused by a pan or imperious layer this can be cured by applying dressings of sand over the lawn using a shovel or spade and brushing it into the surface of the lawn to build up a sand carpet at the base of the grass plants. This will create a surface that’s freely drained.
The 2 keys are to firstly apply sand which is made of particles of a similar size such as a kiln dried sand used for block paving or sand used for a child’s play sandpit. Standard building sand used for laying bricks etc will have particles that are all different sizes and so it is not suitable because it creates a solid mass with few air spaces.
Secondly, apply the sand so it does not smoother the grass totally so that the grass will recover and grow through the newly applied sand carpet. Ideally, you need to apply 4 applications of sand over 3 to 6 months. Ideally, you are aiming to create a sand carpet at the base of the grass plants 15mm to 25mm in depth.
Sand can normally be purchased in 800KG bags delivered to your home address by your local builder’s merchant.