Frequently Asked Questions

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Grass Seed FAQs

There's a lot to learn about grass seed. We've answered your most asked questions below!
  • When should I sow grass seed?

    You can sow grass seed when temperatures are 10 degrees and above consistently during the day and at night. Before sowing, check these temperatures are forecast in your area for at least two weeks. Do not sow in flood, frost, snow or extremely hot conditions. With this in mind, typically the best times to sow are Spring or Autumn, and in most parts of the UK you can confidently sow from April right through to September.

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  • How long does grass take to grow?

    Most grass seed will sprout within 10 days of being sown – if sown in the correct conditions for growth. This means sowing when temperatures are 10 degrees and above, with good weather forecast for the following two weeks.

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  • How long will it take for my lawn to be fully grown?

    If sown in the correct conditions, your lawn should be fully grown at the 6-8 week mark when your grass is hitting heights of 5 – 7cm.

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  • How often should I water my lawn?

    You should water a newly sown lawn once a day, everyday, for 6 weeks avoiding when it is raining. Our UK weather will do a good job of watering an existing lawn for most of the year – but during a drought you should aim to water deeply between 10-14 days apart to help your grass’ root system to build resilience.

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  • How do I sow a new lawn?

    The best way to learn how to sow a new lawn is by using our video guide / step by step pictorial guide.  You can also scan the QR code on the back of your bag that will take you directly to our How To Hub.

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  • What height should I mow my lawn at, and does it matter?

    You can mow your lawn at any height you like, but its best to follow a guide to keep your grass healthy. Cutting your lawn too short can damage it, and letting it grow too long can encourage weeds and disease to take hold. If your lawn gets a lot of use, you should mow at 20-40mm to keep it long and lush. For a finer lawn that’s just for show, you can mow shorter at 10-20mm. Regardless of what type of lawn you have, your first mow (spring) and last mow of the season (autumn) should be on the highest setting on your lawnmower.

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  • What should I be feeding my lawn now?

    Summer is when your lawn should (hopefully) be looking its very best, so if it isn’t – a feed is more than likely the missing thing it needs! At this stage in summer you have several quick fix options to get your lawn back to its best. For any seeding or patch up repairs, use Pre-Seed First Feed. For removing weeds and moss and adding greeness, consider 3 IN 1 Lawn Rescue.  For an almost instant effect green lawn, Oh So Green will provide non-stop greeness for 6 weeks.

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  • My grass is yellowing, what should I do?

    Yellow grass can be the sign of a range of different issues, so it’s important to work out what it is exactly before taking action. Your lawn may not be fed regularly enough so lacks nutrients, it may have fallen foul to certain pests that are causing it to yellow in specific spots, or there may be issues with drought or your mowing regime. Click the button below to find out more.

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  • Is your lawn food safe for pets?

    All of our lawn food products contain chemicals. It is best to keep pets off the lawn during application and until the granules dissolve. If your pet uses the lawn as a bathroom then supervise them when they are doing this. Once the granules are dissolved, it is safe to let pets back on the lawn.

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We get all sorts of questions, browse through to find one that may be specific to your needs.
  • I have random yellow patches in my lawn, but no dog. What is causing this?

    Yellowing can be a sign of a variety of issues in your lawn, but if it is in certain spots then the root of the problem will be much easier to spot. If you don't have a dog that could be causing these dead patches, your next best guess is a lawn pest. Lift up part of your turf to see if there are any leatherjackets or chafer grubs and if they are present, read our blog on how best to deal with these.

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  • Can I put down lawn food and seed at the same time?

    This depends entirely on the product you use, but for our lawn food products we would recommend that you do not apply them at the same time. Lawn food needs time to dissolve and work on your lawn, so it is best to give it the opportunity to do this before seeding. You can also decide to feed your lawn once it is fully grown, instead of at the seeding stage. Wait until the 6-8 week mark when the lawn has had its first mow, then you can apply a feed. 

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  • How often should I mow my lawn?

    From late February onwards your grass will resume growth and you may be wondering how often you should mow your lawn. In Spring and Summer you should aim to cut your lawn once a week. Cutting your grass too often and too short can stress it, so try to avoid this and enjoy your lawn between mows.

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