How to sow grass seed

How to sow grass seed
How to sow grass seed
Find out how to sow grass seed with our expert guide which will help you get it right first time.

Sowing grass seed may seem like a simple task to some, but even if you're a seasoned sowing professional there are some basic rules that everyone should follow to sow grass seed successfully.

Get your seed bed prepared to perfection

We hate to sound like a school teacher, but it is true that if you fail to prepare - you should prepare to fail. Preparing your seedbed well goes a long way to ensuring successful germination and the future growth of your lawn. One of the first things you should consider is the quality of the soil you are working with - determining what soil type you have will greatly help this. In some instances, you may have extremely poor soil quality (e.g. leftover builders material in a new build) and it may be advisable to add top soil. Other soil types - sandy, clay and loam can all be worked with but will still need to be well prepared. The ideal seedbed should be:

  1. Free from weeds, moss or other debris
  2. Well-draining
  3. Level

To find out more about how to achieve this - follow our How to prepare the perfect seedbed guide.

Knowing when to sow grass

Sowing season in the UK is generally from mid March - September, this is when temperatures are 8-10 degrees and above consistently, which is required for germination to occur. When planning to sow grass, make sure to consult a two week forecast to mitigate any risk of adverse weather or sudden drop in temperatures. If you plan to sow in particularly hot weather, make sure to water your soil adequately before and after sowing so that your seedlings do not dry out.

How to sow grass

You can sow grass seed by hand by simply scattering it, or by using a handheld spreader - please contact your manufacturer to calibrate the correct setting that matches the spreading rate of the seed. For sowing a new lawn, we recommend sowing the seed at 50g per m2. For overseeding an existing lawn, we recommend sowing at 35g per m2.

Sowing a new lawn

  • Dig the soil over to a depth of 20-25cm
  • Remove weeds by hand or use a weed killer
  • Add top soil if you believe the soil to be poor quality
  • Rake the area to get a level seedbed
  • Sow the seed at our recommended rate of 50g per m2, by using a seed spreader or your hand
  • Rake the seed in after sowing so that the seed is in amongst the soil
  • Firm down by foot or by using a roller to improve seed to soil contact

Overseeding an existing lawn

  • Remove any dead grass, weeds or moss by scarifying / raking the area
  • Rake the area enough so that the soil is loose
  • Sow the seed at our recommended rate of 35g per m2, by using a seed spreader or your hand
  • Rake the seed in after sowing so that the seed is in amongst the soil
  • Firm down by foot or by using a roller to improve seed to soil contact

Sow between 5mm and 10mm beneath the surface. That’s about 3 pound coins deep (stacked).

Post Sowing Aftercare

  • Continue to water your lawn deeply and daily for the next six weeks, avoiding when it is raining
  • Your lawn will take up to 6 weeks to fully establish
  • Once there is an even coverage throughout the lawn and grass blades are hitting heights of 5-7cm, your lawn is ready for its first mow.
  • To keep your lawn healthy and weed free, remember to regularly fertilise - our fertiliser programme recommendations are below.

fertiliser guide

Got more questions? Check out our Grass FAQs section!