Growing Conditions · England

East Devon Growing Conditions

Soil, hardiness and a planting calendar for East Devon — across 13 postcode districts.

RHS H4 loamy-clay with impeded drainage 1048mm rain

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

Rated RHS H4 — the UK mainstream, with winter lows near -6°C. The vast majority of garden plants, perennials, shrubs and trees come through a normal winter unprotected; only genuinely tender exotics need a warm corner or cover.

Rain & growing season

A wet climate (1048mm a year): plants rarely go thirsty, but lean on good drainage, disease-resistant varieties and falls that shed water off paving and lawns. A long growing season (~350 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 East Devon

Sow indoors
January–February
Plant out
early May
Harvest
June–November

The long season allows a second sowing of quick crops in July.

Timings are guided by this area's ~350 frost-free days and RHS H4 hardiness; adjust for a cold or sheltered garden.

Conditions by Postcode

PostcodeSoil HardinessRainfall
EX1 loamy-clay with impeded drainage RHS H4 1157mm
EX10 acid clay loam, seasonally wet RHS H4 980mm
EX11 free-draining acid loam — the classic 'good garden soil' RHS H4 980mm
EX12 loamy-clay with impeded drainage RHS H4 980mm
EX14 loamy-clay with impeded drainage RHS H4 980mm
EX15 fertile loam with a high water table RHS H4 980mm
EX2 light, fast-draining sandy soil RHS H4 1157mm
EX24 free-draining acid loam — the classic 'good garden soil' RHS H4 980mm
EX4 free-draining floodplain loam RHS H4 1157mm
EX5 light, fast-draining sandy soil RHS H4 1157mm
EX8 loamy-clay with impeded drainage RHS H4 1157mm
EX9 free-draining acid loam — the classic 'good garden soil' RHS H4 980mm
TA3 thin, alkaline soil over chalk RHS H4 980mm

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