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From the middle of the month onwards in the south, plant bedding plants, tender exotics, frost-tender vegetables and sweet pea plants started off under glass. Wait until the end of the month in the north and Scotland.
Keep on top of weeding and hoeing.
Bring out frost-tender trees and shrubs from the conservatory once the danger of frost has passed.
Plant up outdoor tubs, troughs, window-boxes and hanging buckets in the middle of this month at the earliest.
Water the vegetable patch regularly in dry weather.
Continue deadheading and feeding spring-flowering bulbs.
Divide polyanthus and primroses after flowering.
Clear spring-flowering plants.
Sow swede, beetroot, maincrop carrots, autumn cabbage, autumn/winter cauliflowers, broccoli, peas, radish, lettuce and spring onions.
Sow frost-tender vegetables, e.g. French and runner beans, sweetcorn, courgettes and pumpkins.
Plant frost-tender vegetables once the danger of frost has passed, but harden them off first.
Continue earthing up potatoes.
Harvest lettuce, radishes, rocket and over-wintering onions.
Harvest baby potatoes.
Plant out tomatoes sweet peppers, chillies, aubergines, melons and cucumbers in late May.