Most vegetable gardens can accommodate a few crops for spring. If a greenhouse or polytunnel is available, it will help to over-winter some crops and start off others early, but heating greenhouses for year-round harvests is rarely efficient.
Choose an open site with free-draining soil, cultivated thoroughly prior to sowing or planting and enriched with organic material. Clay soils can be problematic as they warm up slowly; in this situation raised beds can be helpful. Where ground is in short supply, containers will support a few plants.
In the north of England, spring-sown crops may need to be sown later than in the south and most crops will mature two to four weeks later.