Growing Conditions · England

Richmond upon Thames Growing Conditions

Soil, hardiness and a planting calendar for Richmond upon Thames — across 5 postcode districts.

RHS H4 free-draining acid loam — the classic 'good garden soil' 727mm 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

One of the drier parts of the country (727mm a year), so established beds still need summer watering and drought-tolerant planting pays off. A typical UK growing season (~330 frost-free days), with the last frosts clearing through spring and first frosts returning in autumn.

Planting Calendar for Richmond upon Thames

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

Timings are guided by this area's ~330 frost-free days and RHS H4 hardiness; adjust for a cold or sheltered garden.

Conditions by Postcode

PostcodeSoil HardinessRainfall
SW13 wet, very acid sandy loam RHS H4 727mm
SW14 heavy, base-rich clay loam that sits wet in winter RHS H4 727mm
TW11 free-draining acid loam — the classic 'good garden soil' RHS H4 727mm
TW12 free-draining acid loam — the classic 'good garden soil' RHS H4 727mm
TW9 fertile loam with a high water table RHS H4 727mm

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