Early flowering shrubs and herbaceous plants will need cutting back after flowering to encourage fresh growth. Deadhead roses, peonies and pansies. Divide bearded irises every three or four years but remember they like a dry well drained position and if replanting make sure the rhizome is not completely buried. Orientate them north/south with the leaf fan at the north so that the rhizome can be baked in the sun.
Now is a good time to divide clumps of daffodils; either replant straight away or dry them off for replanting in August /September.
The vegetable plot should be producing good results now but think about succession sowing of lettuce, beetroot , turnip and early maturing carrots. Pinch out growing tips of runner beans once they have reached the top of the their supports. Water potatoes to ensure a heavier crop.