Growing Conditions · England
Lewes Growing Conditions
Soil, hardiness and a planting calendar for Lewes — across 8 postcode districts.
Soil
A workable loam-to-clay that drains slowly, so water can pond after heavy rain and roots sit cold in winter. Most shrubs and perennials do well once established; add grit and compost for vegetables, and choose damp-tolerant plants for low spots. Landscaping projects should plan for falls, French drains or soakaways so paving and lawns shed water.
Winter hardiness
A mild area rated RHS H3 — winters usually bottom out around -4°C. Most hardy plants are safe, and you can grow half-hardy exotics that fail further north, but the occasional hard frost means tender plants still want a sheltered wall or winter fleece.
Rain & growing season
Moderate rainfall (801mm a year) — enough for most gardens without heavy irrigation, though pots and new plantings need watering in summer. A long growing season (~352 frost-free days) — you can sow earlier and harvest later than most of the country, and squeeze in a second late sowing.
Planting Calendar for Lewes
The long season allows a second sowing of quick crops in July.
Timings are guided by this area's ~352 frost-free days and RHS H3 hardiness; adjust for a cold or sheltered garden.
Conditions by Postcode
| Postcode | Soil | Hardiness | Rainfall |
|---|---|---|---|
| BN10 | thin, alkaline soil over chalk | RHS H3 | 801mm |
| BN25 | free-draining acid loam — the classic 'good garden soil' | RHS H3 | 801mm |
| BN7 | heavy, base-rich clay loam that sits wet in winter | RHS H3 | 801mm |
| BN8 | free-draining acid loam — the classic 'good garden soil' | RHS H3 | 801mm |
| BN9 | thin, alkaline soil over chalk | RHS H3 | 801mm |
| RH15 | loamy-clay with impeded drainage | RHS H3 | 801mm |
| RH16 | loamy-clay with impeded drainage | RHS H3 | 801mm |
| TN22 | loamy-clay with impeded drainage | RHS H3 | 801mm |
Planning work in Lewes?
Browse Companies House-registered landscaping businesses in the area.
