United Kingdom
Lawn care, timed to your weather
Specific answers to the timing questions that decide whether a lawn thrives: when to feed, how short to mow, when to overseed and when to leave it alone. Written for your climate, from the same rules the What a Green Lawn app checks against your forecast every day.
How the app works
- Add your lawn. Draw it on the map and the app works out its size, so product amounts match your garden.
- Every day it scores feeding, overseeding and scarifying against your local forecast, and suggests a mowing height for the weather.
- Log what you did. The calendar plans the next job around your grass type and the season.
Guides
Feeding
- Should You Lime Your Lawn? Soil pH, Testing and Timing in the UK Most UK lawns do not need lime. How to test soil pH, when lime helps, how much to use, when to apply it and why over-liming causes its own problems.
- How Much Lawn Feed Do You Need? Grams per Square Metre, Worked Out About 3.5 g of nitrogen per m² per feed for a ryegrass lawn. How to turn the NPK on the box into grams per m², with a 145 m² Manchester garden as the example.
- When to Feed Your Lawn in the UK: Spring, Summer and Autumn First feed in April once the grass is growing, autumn feed in September. How to tell from soil temperature, rain and wind whether today is the day.
Seeding and overseeding
Scarifying and aeration
Mowing
- Cutting Wet Grass: Should You, and How Long to Wait After Rain Why cutting wet grass tears the blades, clogs the mower and ruts the lawn, how long to wait after rain or dew, and what to change if you have to cut anyway.
- Robot Lawn Mower Height and Schedule, Month by Month What cutting height to set on a robot mower, how many days a week it should run each month, why it should not run at night, and when to bring it in.
- First and Last Cut of the Year: When to Start and Stop Mowing The first cut in March or April when the grass grows and the ground is firm, the last in late October or November. Heights, timing and mild winters.
- What Height to Cut Grass: Mowing Height for UK Lawns A family lawn at 3.5 to 5 cm, a fine ornamental lawn much shorter. The right height of cut for your lawn, the one-third rule and when to raise the blades.
Watering
Weeds and moss
Planning and lawn records
- How to Measure Your Lawn Area in Square Metres Split the lawn into rectangles, triangles and circles, add up and take off beds, or trace it on a satellite map. The m² every box of feed and seed asks for.
- Lawn Care Diary: What to Write Down and Why It Helps Feeds, mowing height, seed, moss killer and soil pH. How keeping a lawn care diary tells you when the next feed is due and what actually worked.
Lawn care by season
- Lawn Care Calendar UK: What to Do Each Month A month-by-month lawn care calendar for UK lawns: first cut, feeding, moss, scarifying, overseeding, weeds and winter jobs, adjusted for the British weather.
- Soil Temperature for Grass: When to Sow, Scarify and Feed Grass follows soil temperature, not air temperature. The °C thresholds for sowing grass seed, scarifying and the first feed, and how to measure it.