Coverage, dilution & analysis
Coverage & dilution
- Coverage
- 100 ml up to 40 m² · 200 ml up to 80 m² · 500 ml up to 200 m² · 1 L up to 400 m²
- Application rate
- 2.5–7.5 ml/m², diluted in 30–60 ml of water per m² (25–75 L/ha in 300–600 L water)
- Season
- Autumn and winter
Analysis
NPK 3-0-20 (chloride-free potassium)
Potassium is your lawn's overcoat
Sprayed on, taken up straight away
Low nitrogen, no phosphorus - on purpose
Where it fits alongside the granular
Why Mowd?
Concentrated, not watered down
A little goes a long way - one small bottle treats a whole lawn, so you are not paying to ship water around the country.
Straight to work
Diluted and sprayed, it reaches leaf and rootzone the same day rather than waiting on rain to break granules down.
Made by turf pros
Built on 40+ years of sports and domestic turf experience, blended and bottled in the UK.
Help when you need it
Plain-English guidance, the free MyLawn app and UK-based support if you ever get stuck.
Ready to give your lawn a lift this autumn?
Choose the bottle size that covers your lawn, dilute, and spray.
Frequently asked questions
When should I apply a liquid autumn lawn feed?
From early September through to late November is the main window, while the grass is still growing and the soil is warm enough to take the feed up. Getting it on before the first hard frosts is the point - you want the potassium in the plant before it needs it. You can also top up during a mild, dry spell in mid-winter if the lawn is looking tired. Do not apply to frozen, waterlogged or drought-stressed grass, and avoid spraying in strong sunshine or when heavy rain is due within a few hours.
What does potassium do for a lawn?
Potassium is the hardiness nutrient. It thickens cell walls in the grass leaf, helps the plant regulate water, and improves its tolerance of cold, drought, wear and disease pressure. It does not make the lawn grow or go dramatically greener - that is nitrogen's job - so a high-potassium feed like this one is about resilience rather than looks. That is why it is the analysis of choice going into winter, and why sports turf managers use it before a hard season of play.
Can you put too much potassium on a lawn?
You can over-apply any fertiliser, and excess potassium can compete with magnesium and calcium uptake in the soil. Sticking to the rate on the pack keeps you well inside sensible limits: 2.5 ml per square metre for a normal application, up to 7.5 ml for a lawn that has had a hard season. Do not double up on a high-potassium liquid and a high-potassium granular in the same week - space them out, or use one as the base feed and the other as a top-up.
Can I use this in spring or summer?
You can, but it is not a growth feed - with only 3% nitrogen it will not green up or thicken a lawn the way a spring or summer feed does. Where it does earn its place out of season is under stress: before a heatwave, or on a lawn taking heavy foot traffic, potassium helps the plant handle water and wear. For general spring and summer feeding you want something nitrogen-led instead.
How much do I need for my lawn?
Work on 2.5 ml of concentrate per square metre. That means 100 ml covers up to 40 m², 200 ml up to 80 m², 500 ml up to 200 m² and 1 litre up to 400 m². If you are not sure of your lawn area, a small garden lawn is roughly 50 m², a medium one around 150 m² and a large one about 300 m² - or use our Measure My Lawn tool for something more exact. At the top rate of 7.5 ml per m² each bottle covers a third of that area.
Do I need to water it in?
No. It is already diluted when you spray it, and the nitrogen is taken up through the leaf while the potassium washes in with normal moisture. Apply it on a still day when the grass is dry, and try to pick a window where heavy rain is not forecast for a few hours so it is not washed straight off. Leave a day or two before you mow.
Is it safe for children and pets?
Keep children and pets off the treated lawn until the grass is dry. Handle the concentrate with care: it causes serious eye irritation, so wear protective gloves and eye protection when measuring and mixing, and wash your hands and any exposed skin afterwards. Store the bottle upright, out of reach of children, somewhere cool, dry and frost-free. Always follow the rates and safety guidance on the pack.
Can I apply it with a watering can?
Yes - a watering can with a fine rose works fine on a small lawn, as long as you measure the concentrate accurately and cover the area evenly. For anything much over 100 m² a knapsack or pressure sprayer is easier and gives a far more even result. Whichever you use, shake the bottle well first and rinse the equipment out afterwards.
Not sure what your lawn needs next?
MyLawn is our free lawn-care app. Tell it your postcode, grass type and what you have already done, and it tells you the single best next job to do — in plain English. Most lawn apps give you a feature list; we give you an opinion.