Overseeding of an existing lawn is a recognised essential part of annual lawn maintenance. All lawns are affected by the specific growing environment in which they exist, their level of use and general weather conditions. As a result, understanding the basic principles of overseeding and choice of seed mix will enable you to work with nature toward a greener and healthier lawn.
Overseeding your lawn will:
The best time to overseed an existing lawn is in spring and autumn, with germination taking 7 to 21 days in ideal conditions.
Typical daily temperatures need to be in excess of 13ºC for grass seed germination to be successful.
It’s important to choose the right seed for overseeding. First of all, try to work out what grass types you already have in your lawn. You will also need to consider what you use the lawn for, the aspect of the garden, if the soil drains well, as well as the appearance you are trying to achieve.
For a more wear tolerant lawn choose a seed mix containing perennial ryegrass, such as Medallion® Premium Lawn Seed, which is the same mix used to grow our award winning Medallion® turf. It is a blend of some of the most advanced cultivars for excellent appearance and durability, ideal for use in the majority of gardens and perfect for overseeding an existing Medallion lawn. It contains both fine and medium-bladed leaf, with outstanding year round colour, that will establish rapidly.
For shady, drier areas or ornamental lawns a pure fescue blend may be more appropriate and will introduce shade and drought tolerant grasses, which have a fine bladed leaf and rich green colour. This type of seed mix is also ideal if you are looking to introduce finer grasses to a ryegrass, utility lawn.
You may need to select a different seed mix for different areas of your garden or even different areas of the same lawn. For example, a fescue blend for a front lawn and a ryegrass blend for a back garden and a shady part of your lawn will benefit from a higher proportion of fescues in the mix.
Further lawn care advice can be found in our Information Centre. You can also sign up for lawn tips to receive regular lawn care advice, news and promotional offers by email which will help you get the best from your lawn.