Start to harden off aubergines, courgettes, marrows, peppers and tomatoes grown from seed, but keep them under cover if late frost threatens.
Ensure fruit trees and bushes have enough water while the fruit is setting or the trees may shed fruitlets.
Hoe regularly on dry days to prevent weed seedlings becoming established.
Feed seedlings and young plants which are growing poorly or have pale, yellowing foliage.
In the greenhouse, pinch out the tips of side shoots of cucumbers two leaves beyond developing fruits.
Apply lawn feed. Liquid feeds can be applied with a watering can, or slow-release granular feeds with a wheeled lawn spreader.
Cover gooseberries, currants, strawberries and soft fruits with netting to keep birds at bay.
Complete planting out of tender bedding plants.
Plant out chrysanthemums and dahlias raised from cuttings.
Prune late-spring and early summer-flowering shrubs such as philadelphus, weigela, ceanothus, escallonia and kerria immediately after flowering.
Lift and divide water lilies.