Lawn Care Calendar & Feed Calculator (UK)
Calculate fertiliser quantities and find the right month for each UK lawn care task — feeding, mowing, scarifying, aerating, and overseeding.
Spring (March-May)
March: first feed of the year as growth restarts. Spring feed: high nitrogen (e.g. 12:6:6 or 18:6:6) at 35g/m². Lift mower height for first cuts (40-50mm). Continue mowing as growth dictates. April: peak spring growth. Mow weekly, gradually lowering height to 25-35mm. Apply weed and feed if needed (Westland Aftercut, Evergreen Complete) — kills weeds while feeding grass. May: scarify lightly if not done in autumn (light vertical raking to remove dead grass). Overseed bare patches with grass seed
Summer (June-August)
June-July: peak season. Mow 1-2 times per week. Cut height 25-35mm (slightly longer in drought). NEVER scalp the lawn — never remove more than 1/3 of grass height in one cut. Summer feed (lower nitrogen, e.g. 9:7:7): June or July. Water deeply but infrequently in drought (1 inch/25mm per week applied in 1-2 sessions, NOT light daily watering). Mowing in heat: raise blade height to retain moisture. Leave clippings on lawn ('mulching') — returns 30% of nitrogen needed. August: late summer feed. Wa
Autumn (September-November)
September: AUTUMN FEED — the most important feed of the year. High potassium and phosphorus, low nitrogen (e.g. 3:10:5). Strengthens grass for winter, root development. 35g/m² of autumn fertiliser. Scarify thoroughly (mechanical scarifier ideal) — removes thatch and moss. Apply moss killer if needed (iron sulphate-based, ferrous sulphate). Aerate compacted areas with hollow-tine aerator. Overseed bare patches and worn areas. October: continue mowing as growth slows. Raise cut height (40-50mm). F
Winter (December-February)
Winter rest period for grass. Activities: avoid walking on frosty or waterlogged lawn — damages grass structure. Repair mower, sharpen blades for spring. Plan repairs for following spring. Service garden equipment. January: order grass seed and fertiliser for upcoming season. February (end of month): if mild, start considering spring feed for early March. Lift mower from shed, ensure sharp blade. Look for signs of moss, weeds requiring spring treatment. Important: a sharp mower blade is one of t
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