●● Plant agapanthus bulbs in groups in large pots, or directly outside in warm, sheltered borders. ●● Move back containers of shrubs and permanent plantings from their sheltered winter homes to their usual positions. ●● Sow a short row of lettuce every other week to ensure a regular supply of leaves throughout summer. ●● Sow peas and mangetout outside. ●● Continue potting up rooted cuttings of chrysanthemums and plant out well-rooted plants once they have been hardened off in a cold frame. ●● Support growing border plants to stop them from collapsing in the wind. ●● Divide congested clumps of pampas grass. ●● Continue to water newly-planted trees until they are well established. ●● Cover stems of newly-emerging early potatoes with fleece to protect from frost. ●● Prepare trenches for planting out young celery plants raised under glass.