Growing Conditions · England

Forest of Dean Growing Conditions

Soil, hardiness and a planting calendar for Forest of Dean — across 11 postcode districts.

RHS H4 free-draining acid loam — the classic 'good garden soil' 843mm rain

Soil

The soil most gardeners wish for: a free-draining, slightly acid loam that warms early in spring and rarely waterlogs. It suits the widest range of planting — vegetables, perennials, shrubs and trees — and asks little beyond an annual mulch to keep its structure. Because it drains freely it can dry in a hot summer, so new plants, pots and lawns benefit from steady watering through July and August. For patios, paths and walls its stability makes for straightforward foundations.

Winter hardiness

Rated RHS H4 — the UK mainstream, with winter lows near -7°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

Moderate rainfall (843mm a year) — enough for most gardens without heavy irrigation, though pots and new plantings need watering in summer. A typical UK growing season (~327 frost-free days), with the last frosts clearing through spring and first frosts returning in autumn.

Planting Calendar for Forest of Dean

Sow indoors
February–March
Plant out
mid-May
Harvest
June–October

Timings are guided by this area's ~327 frost-free days and RHS H4 hardiness; adjust for a cold or sheltered garden.

Conditions by Postcode

PostcodeSoil HardinessRainfall
GL14 free-draining acid loam — the classic 'good garden soil' RHS H4 843mm
GL15 shallow, free-draining acid loam over rock RHS H4 843mm
GL16 heavy, base-rich clay loam that sits wet in winter RHS H4 843mm
GL18 free-draining acid loam — the classic 'good garden soil' RHS H4 843mm
GL19 loamy-clay with impeded drainage RHS H4 843mm
GL2 fertile floodplain soil with a high water table RHS H4 843mm
HR8 loamy-clay with impeded drainage RHS H4 843mm
HR9 free-draining acid loam — the classic 'good garden soil' RHS H4 843mm
NP16 free-draining, fertile near-neutral loam RHS H4 843mm
NP25 loamy-clay with impeded drainage RHS H4 843mm
WR13 acid clay loam, seasonally wet RHS H4 843mm

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