Growing Conditions · England
Cotswold Growing Conditions
Soil, hardiness and a planting calendar for Cotswold — across 13 postcode districts.
Soil
A shallow, free-draining alkaline soil over chalk or limestone. It suits chalk-loving plants and many herbs but locks up iron, so acid-lovers such as rhododendrons and blueberries struggle without raised beds of ericaceous soil. The thin topsoil dries fast — mulch to hold moisture. Expect rock close to the surface when digging footings.
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 (828mm a year) — enough for most gardens without heavy irrigation, though pots and new plantings need watering in summer. A typical UK growing season (~329 frost-free days), with the last frosts clearing through spring and first frosts returning in autumn.
Planting Calendar for Cotswold
Timings are guided by this area's ~329 frost-free days and RHS H4 hardiness; adjust for a cold or sheltered garden.
Conditions by Postcode
| Postcode | Soil | Hardiness | Rainfall |
|---|---|---|---|
| GL12 | loamy-clay with impeded drainage | RHS H4 | 882mm |
| GL4 | thin, alkaline soil over chalk | RHS H4 | 843mm |
| GL55 | loamy-clay with impeded drainage | RHS H4 | 811mm |
| GL56 | free-draining acid loam — the classic 'good garden soil' | RHS H4 | 811mm |
| GL6 | alkaline clay loam with impeded drainage | RHS H4 | 843mm |
| GL7 | thin, alkaline soil over chalk | RHS H4 | 811mm |
| GL8 | alkaline clay loam with impeded drainage | RHS H4 | 843mm |
| GL9 | thin, alkaline soil over chalk | RHS H4 | 882mm |
| OX18 | thin, alkaline soil over chalk | RHS H4 | 745mm |
| SN16 | heavy, base-rich clay loam that sits wet in winter | RHS H4 | 837mm |
| SN6 | heavy, base-rich clay loam that sits wet in winter | RHS H4 | 837mm |
| WR11 | alkaline clay loam with impeded drainage | RHS H4 | 811mm |
| WR12 | alkaline clay loam with impeded drainage | RHS H4 | 811mm |
Planning work in Cotswold?
Browse Companies House-registered landscaping businesses in the area.
