Grass left on it own will become infested with moss, thatch, a layer of slowly decomposing grass, dead organic matter dead roots, and debris that’s above the sod and below grass blades.
We need to scarify to remove excess thatch from our lawns. Thatch is a build up of old grass, grass clippings and moss. Too much thatch in your lawn will suffocate the grass, cause moss and disease problems and prevent vital nutrients from getting to the roots. Once the scarifying has taken place the moss, thatch, and rotting material should be removed from the grass to leave a clean open sward.
When the operation is completed you should be left with a nice open sward. This will have been thoroughly scarified cutting the Rhizomes encouraging growth and promoting a drought resistant sward. Once the scarifying is complete, the area should be over seeded to ensure we maintain the correct cultivars in our lawn. There has been a tremendous amount of work done in developing new hard wearing drought resistant varieties of grass. This is particularly true of the rye grass's. There are also developments going on with micro clover to aid fertility and avoid the use of so much nitrogen. If the grass is left inevitably if will become infested with weed. Over seeding is not a disruptive operation.
The spiked roller makes a large number of small holes in the ground. Seed is then metered out through a slot and brushed into the hole. This is then run over with a roller.