Growing Conditions · England
Guildford Growing Conditions
Soil, hardiness and a planting calendar for Guildford — across 14 postcode districts.
Soil
A deep, fertile loam with groundwater close to the surface — productive in summer, but wet in winter and slow to warm. Choose moisture-tolerant planting, raise beds for vegetables, and expect strong growth once it dries. Drainage and raised levels matter for paving and lawns.
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 (753mm a year) — enough for most gardens without heavy irrigation, though pots and new plantings need watering in summer. 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 Guildford
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
| Postcode | Soil | Hardiness | Rainfall |
|---|---|---|---|
| GU1 | heavy, base-rich clay loam that sits wet in winter | RHS H4 | 755mm |
| GU12 | — | RHS H4 | 755mm |
| GU14 | fertile loam with a high water table | RHS H4 | 755mm |
| GU16 | wet, very acid sandy loam | RHS H4 | 755mm |
| GU2 | wet, very acid sandy loam | RHS H4 | 755mm |
| GU23 | free-draining acid loam — the classic 'good garden soil' | RHS H4 | 755mm |
| GU24 | fertile loam with a high water table | RHS H4 | 755mm |
| GU3 | heavy, base-rich clay loam that sits wet in winter | RHS H4 | 755mm |
| GU4 | fertile floodplain soil with a high water table | RHS H4 | 755mm |
| GU5 | very acid, free-draining sandy loam | RHS H4 | 755mm |
| GU7 | fertile loam with a high water table | RHS H4 | 755mm |
| KT23 | heavy, base-rich clay loam that sits wet in winter | RHS H4 | 755mm |
| KT24 | fertile loam with a high water table | RHS H4 | 755mm |
| RH5 | very acid, free-draining sandy loam | RHS H4 | 727mm |
Planning work in Guildford?
Browse Companies House-registered landscaping businesses in the area.
