Lawn Care Tips for September

Sunday, 5 September, 2021

Posted in September Lawn Care Tips

Lawn Care Tips for September

September and October are the main period for carrying out tasks on your lawn including scarifying, aeration and topdressing.

Lawn Scarifying

September and October are the main period for carrying out this task. The reasons for scarifying are:

  • To lift procumbent (trailing) growth from trailing weeds such as clover and creeping cinquifoil. Without the trailing growth removed it will quickly invade the lawn and swamp the grasses.
  • To lift trailing growth of grasses, this will thin the sward.
  • To remove moss.
  • To remove thatch. Thatch is organic matter that has not decomposed at the base of the plant, above the soil.

Scarifying can be carried-out with varying severity, light to moderate scarifying tends to be suitable for the majority of lawns. Heavy scarifying can cause bare patches and very often has to be followed by topdressing and overseeding.

More about scarifying

Lawn Aeration

Aeration can be carried out throughout the year but September and October are the months to carry-out this operation if it is to be done just once. Aeration consists of pushing tines or blades into the top 3-4 inches of the rootzone. The reasons for aeration are:

  • To allow oxygen into the rootzone and carbon dioxide out (gaseous exchange).
  • To relieve compaction. Compacted soil reduces root growth and water availability.
  • To allow water to penetrate through the soil surface into the rootzone.

More about aeration

Lawn Topdressing

An uneven and bumpy lawn can be topdressed to level it. Topdressing is applied and 'rubbed-in' with a lute, the topdressing levels out the hollows, minor hollows can be topdressed-out relatively easily but deeper hollows may take several years.

More about topdressing

Lawn Overseeding

Any bare patches remaining after heavy scarification can be seeded, if they're not seeded weeds will germinate on the bare soil. Regular overseeding combined with topdressing can also change the composition of the sward so gradually improving the quality of the lawn.

More about overseeding

Application of Insect Deterrent

With a regular fortnightly spray application of a deterrent in August and September, crane flies will be 'put-off' from laying eggs in the soil which will hatch into leatherjackets.

More about pest control

Application of Nematodes

Commencing in late September and running into October, nematodes should be applied to attack leatherjackets. The soil temperature needs to be correct and the leatherjacket needs to be at the correct stage in its lifecycle for this to be successful. It's always beneficial to spike the soil first so that the nematodes can enter the soil as effectively as possible rather than lying on the soil surface. They will need to be watered-in after application. A second application can be made in the Spring.

More about pest control

Fertiliser Application

A high potash and phosphate fertiliser should be applied to encourage strong root growth and hardiness. Nitrogen should not be applied in any high quantity as it will encourage soft, sappy, disease prone growth.

More about feeding

Looking to improve your lawn in September?

Please contact me if you would like additional information about our lawn care services and what we can do to improve your lawn in September.