Sowing garden peas: varieties, method and seasons

For a UK outdoor sowing, wait until the soil reaches about 10°C; the main season is spring to early summer. The RHS pea guide gives a practical method for both tall and short varieties. Row layout depends on plant height: taller varieties need room for supports, while shorter varieties can grow in a compact triple row.

Choose the pea type and crop use

Read the packet for plant height and whether the peas are for shelling or eating the whole pod. Mange-tout is a familiar UK label for edible-podded peas; sugar-snap types are another option where the pod is harvested whole. The RHS describes smooth-seeded varieties as hardier choices for early sowing, and wrinkled varieties as choices for later spring or summer. Check the packet's recommended season for your cultivar.

The French SNHF guide advises starting with smooth-seeded peas, then sowing wrinkled peas later in the season; its November–February Mediterranean window is for smooth-seeded types. These are French reference dates, not a UK calendar. The RHS spring guidance here is based on UK conditions and soil around 10°C.

Prepare a sunny, drained bed

Choose a sunny, sheltered spot where excess water can drain. Weed the plot and incorporate well-rotted compost a few weeks before sowing so the soil can settle. Avoid sowing in very damp ground; the RHS notes that seeds may rot in those conditions. If spring soil remains cold and wet, wait for a workable spell or start seeds under cover instead.

Sow outdoors once the soil is warm enough. For tall varieties, place seeds about 7.5 cm apart in a single row or in a double row with 30 cm between the rows. Put netting or wire support on posts or canes in place before or as seedlings emerge. The extra room between double rows makes support easier and improves air movement around taller plants.

Shorter varieties can use a flat-bottomed trench about 5 cm deep and 15 cm wide, arranged as a triple row. Stagger seeds across the trench, keeping about 7.5 cm between plants. A few twiggy sticks can support the stems as they grow. If you add another set of rows, the RHS suggests leaving a distance equal to the mature height of the variety.

Use repeat sowings and keep the crop watered

For peas over summer, sow batches of an early variety every few weeks, or sow early and maincrop varieties together so they mature at different times. Label each row with its variety and date; that makes it easier to see whether the next batch should follow the same interval.

Water well after sowing and keep the bed from drying out while seeds establish. Keep weeds down without disturbing roots near the row. Watch for birds and slugs around young seedlings and use physical protection or hand checks where needed. When the crop is climbing, guide tendrils onto the support rather than pulling stems into place.

Match the sowing window to your climate

For an autumn start, the RHS also describes raising plants under cover and keeping them in a greenhouse or cold frame through winter, before planting out in early spring. This is a separate protected route, not an instruction to sow outdoors in any UK winter.

The French and UK windows above describe different climates; use the local sowing guidance and the variety's packet rather than transferring dates between regions.

The vegetable sowing and planting calendar offers broader seasonal planning. See what to plant in October for autumn context and the crop rotation guide before choosing a bed.

References: RHS, Peas; SNHF, Pois potager (in French).