Growing Conditions · England
King's Lynn and West Norfolk Growing Conditions
Soil, hardiness and a planting calendar for King's Lynn and West Norfolk — across 5 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
A mild area rated RHS H3 — winters usually bottom out around -4°C. Most hardy plants are safe, and you can grow half-hardy exotics that fail further north, but the occasional hard frost means tender plants still want a sheltered wall or winter fleece.
Rain & growing season
Moderate rainfall (794mm a year) — enough for most gardens without heavy irrigation, though pots and new plantings need watering in summer. A long growing season (~357 frost-free days) — you can sow earlier and harvest later than most of the country, and squeeze in a second late sowing.
Planting Calendar for King's Lynn and West Norfolk
The long season allows a second sowing of quick crops in July.
Timings are guided by this area's ~357 frost-free days and RHS H3 hardiness; adjust for a cold or sheltered garden.
Conditions by Postcode
| Postcode | Soil | Hardiness | Rainfall |
|---|---|---|---|
| NR22 | thin, alkaline soil over chalk | RHS H3 | 810mm |
| PE30 | coastal flat soil, high water table, some salt | RHS H3 | 810mm |
| PE31 | thin, alkaline soil over chalk | RHS H3 | 810mm |
| PE34 | coastal flat soil, high water table, some salt | RHS H3 | 729mm |
| PE36 | free-draining, fertile near-neutral loam | RHS H3 | 810mm |
Planning work in King's Lynn and West Norfolk?
Browse Companies House-registered landscaping businesses in the area.
