The effects of poor drainage on lawn
Author: Stefan Palm Date Posted: 2 June 2017
Winter is the time of year when you are most likely to experience drainage issues in your lawn mostly because, you guessed it, there is much more water around.
Lawn areas that don’t drain properly quickly become waterlogged and that isn’t good news for your lawn. Water logging occurs when the soil becomes so wet that there is no room left for oxygen. This means that the lawn will not be able to breathe properly which left untreated can ultimately cause the death of your lawn. A lack of oxygen in the soil is often referred to as anaerobic conditions which can also lead to the build up of gasses like carbon dioxide and ethylene which are not good for root growth.
When roots in the soil are waterlogged for long enough, they begin to recede and rot. The older blades of lawn will turn yellow and the entire stand will begin to thin out. You may even notice a rotten egg or sulphur type smell in the soil. It is unlikely that your soil will remain waterlogged for long enough for the lawn to totally die but it can cause significant issues through the winter as your lawn deals with the issue.
If you notice that you have excessive water hanging around on the soil surface for extended periods of time, I would advise you to consider ways of diverting that water away from your garden areas as there are very few plants that will tolerate waterlogged soils. There are many types of drains available on the market that will allow you to collect and divert water away to your storm water system. If this is not possible, consider installing a pit drain. This is where you dig a pit or hole in the low part of the garden where water would usually accumulate. Fill it with course rock or gravel, then put a 100mm layer of soil on top. Water will filter past the soil and into the pit where it can dissipate over time which keeps the water away from the surface roots.
If you need any further help with drainage, give us a call on 8298 0555.