Watch out for late frosts. Protect tender plants.
Earth up potatoes, and promptly plant any still remaining.
Plant out summer bedding at the end of the month (except in cold areas).
Collect rainwater and investigate ways to recycle water for irrigation.
Regularly hoe off weeds.
Open greenhouse vents and doors on warm days.
Mow lawns weekly.
Check for nesting birds before clipping hedges.
Lift and divide overcrowded clumps of daffodils and other spring-flowering bulbs.
Watch out for viburnum beetle and lily beetle grubs.
Hoe borders regularly to keep down weeds.
Be water-wise, especially in drought-affected areas.
Pinch out sideshoots on tomatoes.
Harvest lettuce, radish, other salads and early potatoes.
Position summer hanging baskets and containers outside.
Mow lawns at least once a week.
Plant out summer bedding.
Stake tall or floppy plants.
Prune many spring-flowering shrubs.
Shade greenhouses to keep them cool and prevent scorch.
Check clematis for signs of clematis wilt.
Place conservatory plants outside now that it is warm.
Water tubs and new plants if dry, but be water-wise.
Deadhead bedding plants and repeat-flowering perennials, to ensure continuous flowering.
Pick courgettes before they become marrows.
Treat apple scab.
Clear algae, blanket weeds and debris from ponds, and keep them topped up.
Give the lawn a quick-acting summer feed, especially if not given a spring feed.
Give woodwork a lick of paint or preserver, while the weather is dry.