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Lawn Feed Calculator

Calculate exactly how much lawn fertiliser you need based on your lawn size and the product's application rate. Avoid under-feeding (patchy results) or over-feeding (lawn burn).

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Enter your lawn dimensions to calculate how much fertiliser you need.

Lawn Feeding Guide

UK lawns benefit from 3–4 feeds per year. Spring feeds are high nitrogen (promotes growth and colour). Summer feeds are balanced. Autumn/winter feeds are low nitrogen, high potassium — to strengthen roots and disease resistance without promoting soft growth before frost. Never feed a drought-stressed or frozen lawn.

Granular feeds should be applied when rain is expected within 24–48 hours, or watered in. Even distribution is critical — a lawn spreader gives far more even coverage than hand application.

Spring (March/April) is the most important feed — use a high-nitrogen spring feed once soil temperature exceeds 5°C. Summer feeds maintain colour and recovery from wear. Never feed in drought — it can scorch grass. Autumn feeds (September/October) use low-nitrogen, high-potassium formulas to harden grass for winter. Avoid feeding after October in most of the UK.
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