Sow celery and celeriac for planting outdoors in June

Sow sweetcorn, marrows, courgettes, pumpkins, and squashes towards the end of the month

Sow leeks

Continue to plant asparagus crowns

Plant maincrop potatoes

Carrots sown late this month may need carrot fly protection

Keep up with successional sowing of vegetables like lettuce, radish, beetroot, peas, broad beans, salad onions, and turnips

Plant out onions sown earlier in the year

Sow dwarf French beans under cloches

Plant seakale

Sow kohlrabi at intervals from now until August

Sow Florence fennel

Broccoli, cabbages, cauliflowers and Brussels sprouts can all be sown outside on a prepared seedbed early in the month

Thin out rows of seedlings

Protect early potato shoots from frost

Watch out for flea beetle

Support peas sown earlier

Divide chives if this was not done last month

Continue sowing and planting herbs

From “Gardening Through the Year” by Ian Spence

Continue watering newly planted trees and shrubs if the weather is dry

Sow greenhouse crops such as tomatoes

Continue sowing and planting vegetables outdoors

Prick out or pot up seedlings before they get congested and leggy

Tie in the new shoots of climbers

Divide perennials

Deadhead daffodils

Keep weeding

From “Gardening Through the Year” by Ian Spence