Growing Conditions · Wales
Monmouthshire Growing Conditions
Soil, hardiness and a planting calendar for Monmouthshire — across 6 postcode districts.
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 -8°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
A wet climate (1105mm a year): plants rarely go thirsty, but lean on good drainage, disease-resistant varieties and falls that shed water off paving and lawns. 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 Monmouthshire
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 |
|---|---|---|---|
| NP15 | free-draining acid loam — the classic 'good garden soil' | RHS H4 | 1186mm |
| NP18 | free-draining acid loam — the classic 'good garden soil' | RHS H4 | 1006mm |
| NP26 | free-draining, fertile near-neutral loam | RHS H4 | 882mm |
| NP4 | free-draining, fertile near-neutral loam | RHS H4 | 1186mm |
| NP44 | free-draining acid loam — the classic 'good garden soil' | RHS H4 | 1186mm |
| NP8 | free-draining floodplain loam | RHS H4 | 1186mm |
Planning work in Monmouthshire?
Browse Companies House-registered landscaping businesses in the area.
