Growing Conditions · England
Oldham Growing Conditions
Soil, hardiness and a planting calendar for Oldham — across 10 postcode districts.
Soil
A slowly draining, very acid upland soil with a peaty top that holds water most of the year. It grows heathland and moisture-loving acid planting; almost anything else needs raised beds, drainage and shelter from wind. Expect a short season and wet ground for any groundwork.
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 (994mm a year) — enough for most gardens without heavy irrigation, though pots and new plantings need watering in summer. A typical UK growing season (~325 frost-free days), with the last frosts clearing through spring and first frosts returning in autumn.
Planting Calendar for Oldham
Timings are guided by this area's ~325 frost-free days and RHS H4 hardiness; adjust for a cold or sheltered garden.
Conditions by Postcode
| Postcode | Soil | Hardiness | Rainfall |
|---|---|---|---|
| M35 | wet, very acid upland soil with a peaty top | RHS H4 | 1025mm |
| OL1 | free-draining acid loam — the classic 'good garden soil' | RHS H4 | 981mm |
| OL16 | acid clay loam, seasonally wet | RHS H4 | 1025mm |
| OL2 | light, fast-draining sandy soil | RHS H4 | 981mm |
| OL3 | slowly draining, very acid peaty upland soil | RHS H4 | 981mm |
| OL4 | slowly draining, very acid peaty upland soil | RHS H4 | 981mm |
| OL5 | slowly draining, very acid peaty upland soil | RHS H4 | 981mm |
| OL6 | wet, very acid upland soil with a peaty top | RHS H4 | 981mm |
| OL8 | acid clay loam, seasonally wet | RHS H4 | 981mm |
| OL9 | light, fast-draining sandy soil | RHS H4 | 1025mm |
Planning work in Oldham?
Browse Companies House-registered landscaping businesses in the area.
