Best Lawn Feed UK: How to Choose the Right One
The best lawn feed in the UK isn't one product, it's the right feed for the season. Use a high-nitrogen feed in spring and summer for green growth, and a potassium-rich feed in autumn and winter to harden the grass. Match the feed to your lawn and the time of year and you'll get steady colour without scorch or waste.
Walk into any garden centre and the choice of lawn feed is overwhelming. The truth is that the best lawn fertiliser depends on three things: the season, your grass type, and what your soil is short of. Get those right and feeding your lawn becomes simple. Here's how to choose.
What is the best lawn feed for UK lawns?
Most UK lawns are cool-season grasses such as ryegrass, fescues and bents, which grow hardest in spring and autumn. A good all-round lawn feed is a slow-release granular fertiliser that releases nutrients steadily over 8 to 12 weeks, rather than a quick green-up that fades in a fortnight. Slow release means less mowing, far less risk of scorch, and better value for money. If you would rather not weigh up the options every season, a plan that sends the right feed at the right time does the choosing for you.
How do I choose lawn feed by season?
The simplest way to pick the best lawn feed is to follow the calendar. In spring, choose a higher-nitrogen feed to wake the lawn up and green it after winter. In summer, use a steady-release feed with potassium for colour and drought tolerance, ideally a no-scorch formula. In autumn, switch to a lower-nitrogen, higher-potassium feed to harden the grass for the cold. In winter, a very low-nitrogen feed rich in potassium and iron protects against frost and disease.
What NPK ratio should lawn feed have?
NPK is the ratio of nitrogen (N, for leaf growth and colour), phosphorus (P, for roots) and potassium (K, for hardiness). For an established lawn, nitrogen and potassium matter most. Phosphorus is mainly useful when you are establishing new grass from seed or turf. As a rough guide, a spring feed might be around 12-3-9, while an autumn feed sits lower in nitrogen, around 10-5-10.
How often should you feed your lawn?
Most lawns do best fed every 6 to 12 weeks through the growing season, which works out at roughly four feeds a year if you follow the seasons. Slow-release granular feeds last longer between applications, while liquid feeds act faster but need topping up more often. Whichever you choose, apply it with a spreader for even coverage and water it in if rain is not forecast.
MyLawn is our free lawn-care app. It looks at your postcode's weather, the season and what you have already done, then tells you the single best next thing to do in plain English. Learn more about MyLawn.
Related Mowd guides: Essential Lawn Care Calendar for UK Gardeners · browse the full lawn fertiliser range.
Frequently asked questions
What is the best lawn feed in the UK?
- There is no single best lawn feed; the right choice depends on the season. Use a nitrogen-rich feed in spring and summer for green growth and a potassium-rich feed in autumn and winter to harden the grass. A slow-release granular fertiliser suits most UK lawns.
When should I start feeding my lawn?
- Begin in spring once the grass is actively growing and you have made your first few cuts, usually from late March to April in the UK. Continue through the seasons and finish with an autumn or winter feed.
Can you put too much feed on a lawn?
- Yes. Over-applying, especially a high-nitrogen feed in hot weather, can scorch the grass and waste product. Stick to the rate on the pack, use a spreader for even coverage, and water in if no rain is due.
Is liquid or granular lawn feed better?
- Granular slow-release feed lasts longer and needs fewer applications, which suits most home lawns. Liquid feed acts faster and is handy for a quick boost, but you will need to reapply more often.