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How to plant grass seed

Planting grass seed is not difficult, and you will find it’s easy if you plan ahead. To help you with this, we will cover a few essential tips to ensure you know how to plant grass seed. Our advice will ensure you get the most out of your garden lawn, from choosing the best grass seed for your garden to your first mow!

How to plant grass seed

Tips for how to plant grass seeds

How to plant grass seed comes down to a few steps, and knowing what temperature does grass seed germinate at is the first and arguably most important thing to be aware of before you go any further. And thankfully, finding out when you should or should not be planting grass seed is easy.

What is the best temperature for planting grass seed?

You should start by checking your local weather forecast to determine if you will get consistent day and night temperatures of 10 °C and above for at least two weeks – this will ensure your newly planted seeds will be warm enough to grow.

How long does grass seed take to grow?

Next, since grass seed takes around 6-8 weeks to establish and grow fully, be aware that a cold weather front can appear suddenly at certain times of the year. For this reason, it is best to avoid planting seeds in the winter months, even if temperatures are acceptable.

When not to plant grass seed?

You should also be vigilant in late autumn and early spring because a cold snap could arrive unannounced and immediately halt your seedlings’ growth, and you don’t want to waste a lot of time and effort! The same applies during the hot summer months or during a heatwave. You should wait until conditions return to normal if temperatures are hitting 20°C and above.

Pick the best grass seed for your soil

The next step in your plan to plant grass seed is choosing the best grass seed for your garden’s soil type. We put a lot of effort, research, and time into choosing the correct grass seed types for our grass seed mixes, and we are confident we have the best grass seed options to suit your garden.

For example, we have seed types that grow fast and durable grass seed ideal for lawns with heavy footfall from kids and pets. We even have specialist seed types suited to lawns that receive less sunlight or lawns with clay-based soils prone to flooding.

The best grass seeds to suit specific growing situations:

  • All Rounder Rapid Lawn is ideal for use anywhere; it grows fast and recovers quickly from wear and tear.
  • Fast Grow Family Lawn is fast-growing and durable; it’s ideal for a lawn that receives a lot of footfall from the family. And it also recovers quickly from wear and tear.
  • Tough Stuff Lush Lawn is a hardy seed mix designed to overcome the wear by dogs racing around and digging in your garden.
  • Shade Supreme Lawn loves shade and will grow in areas of your garden that receive very little sunlight. If you have places overshadowed by trees or hedgerows that never seem to grow, grass seed like Shade Supreme could be your answer!

Specialist grass seed:

  • Super Fine Luxury Lawn is ideal if you want a fine grass lawn with a decorative finish – it is also a superb option for sandy, drought-stricken soils.
  • New Build Dream Lawn is perfect for luscious grass growth over clay soils. It grows fast and is also hard-wearing and durable enough to handle kids and pets running around.

How much grass seed do I need?

Knowing how much grass seed you need per square meter of your garden may not have crossed your mind when considering revamping your lawn. Luckily for you, we’ve thought of that in advance and have a grass seed product calculator that works out how much grass seed you need using two simple measurements. All you need to do is measure the length and width of your garden, enter them into our grass seed calculator, and click “calculate amount”. This calculator will then present you with how large your garden is in meters squared (m²) and how much grass seed you require.

How much grass seed per square metre

For reference, we recommend the sowing rates of 50g of grass seed per square metre (m²) for a new lawn and a sowing rate of 35g of grass seed per m² when overseeding an existing lawn:

  • Sowing rate (New Lawn): 50g per m²
  • Sowing rate (Overseeding Existing Lawn): 35g per m²

Once you know what seed you want and have worked out how much seed you need, you’re ready to start preparing your lawn for planting your grass seed!

How do I prepare the seedbed for my grass seed?

Preparing the perfect seedbed is important but doesn’t have to be complicated. With the correct preparation, it’s another easy process that gets the job done without too much effort.

Tips for getting your soil ready for sowing grass seed:

  1. Weeds and moss can be removed by hand or using a garden trowel - but make sure to remove all the roots! You could also use a handheld spray weedkiller for individual affected areas or our 3 IN 1 Lawn Rescue if weeds and moss are a bigger problem.
  2. Get rid of stones, rocks and debris – not only will you make life easier when it’s time to mow your lawn, but you will also improve the look of your new lawn. The easiest way is to use a sieve or a riddle if you have lots of small stones in your soil.
  3. Rake your soil to break it up - this enables your seeds to benefit from the heat, light and water they need to grow. Ideally, grass seeds need to be three-pound coins (stacked) deep in your soil to grow well. However, if the ground is too hard to pull a rake through, your seed will likely not reach the depth it needs.
  4. Level your lawn - this will look great and decrease the chance of flooding or puddles forming in your garden. A level lawn also makes your mowing routine easier and more enjoyable.

How to plant your seeds

Knowing how to plant grass seed properly is as easy as the other steps – but like them, you need to be aware of the details. For example, when seeding a new lawn, you should sow the seed at a rate of 50g per square metre.

You can sow the grass seed by hand or using a seed spreader. First, measure the area where you will be planting and the amount of grass seed you need, then scatter the seed across the surface. After this, you can use your rake to rake the seed into the soil. Finally, walk gently over the seeded area to ensure the seeds are embedded into the soil.

Then, water your growing seedlings once a day for the first six weeks after planting – this is how long it takes for your lawn to grow fully and be ready for its first mowing.

Lawn seed aftercare

You may be wondering when you can cut your new grass once you’ve seen it starting to flourish on the surface. We recommend you hold off until at least six weeks before mowing and follow our guide on when to mow a new lawn.

When your newly planted grass seed has fully grown, and your lawn is beautifully green and healthy, you are probably wondering if you can do anything else to aid its growth. And the answer is yes; you can help it flourish even more! For this, you should regularly feed it with lawn food fertiliser and remember to remove any weeds and moss when you see them appearing.

For further reading, we have listed a few helpful pieces of information below:


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Product Mentioned...
All Rounder Rapid Lawn
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Fast Grow Family Lawn
  • Family Friendly Grass Seed
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Shade Supreme Lawn
  • Shaded Area Grass Seed
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Tough Stuff Lush Lawn
  • Best For Pets Grass Seed
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New Build Dream Lawn
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Super Fine Luxury Lawn
  • Luxury Fine Grass Seed
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