Growing Conditions · England

Bristol, City of Growing Conditions

Soil, hardiness and a planting calendar for Bristol, City of — across 14 postcode districts.

RHS H4 free-draining acid loam — the classic 'good garden soil' 882mm 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 -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

Moderate rainfall (882mm a year) — enough for most gardens without heavy irrigation, though pots and new plantings need watering in summer. A typical UK growing season (~339 frost-free days), with the last frosts clearing through spring and first frosts returning in autumn.

Planting Calendar for Bristol, City of

Sow indoors

February–March

Plant out

mid-May

Harvest

June–October

Timings are guided by this area's ~339 frost-free days and RHS H4 hardiness; adjust for a cold or sheltered garden.

Conditions by Postcode

Postcode	Soil	Hardiness	Rainfall
BS1	free-draining, fertile near-neutral loam	RHS H4	882mm
BS10	loamy-clay with impeded drainage	RHS H4	882mm
BS11	coastal flat soil, high water table, some salt	RHS H4	882mm
BS13	thin, alkaline soil over chalk	RHS H4	882mm
BS15	free-draining acid loam — the classic 'good garden soil'	RHS H4	882mm
BS16	free-draining acid loam — the classic 'good garden soil'	RHS H4	882mm
BS2	loamy-clay with impeded drainage	RHS H4	882mm
BS3	alkaline clay loam with impeded drainage	RHS H4	882mm
BS4	free-draining acid loam — the classic 'good garden soil'	RHS H4	882mm
BS5	loamy-clay with impeded drainage	RHS H4	882mm
BS6	free-draining, fertile near-neutral loam	RHS H4	882mm
BS7	heavy, base-rich clay loam that sits wet in winter	RHS H4	882mm
BS8	free-draining, fertile near-neutral loam	RHS H4	882mm
BS9	free-draining acid loam — the classic 'good garden soil'	RHS H4	882mm

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