Take cuttings from summer-flowering clematis.
Plant out annual climbers.
Harden off hanging baskets and window boxes ready to put into position outdoors when all danger of frost is over.
Plant both dormant dahlia tubers and young plants.
Sow runner beans and dwarf kidney beans direct into the garden. Plants raised under glass should not be set out until the end of the month.
Make successional sowings of swedes and turnips, to produce crops from August to October.
Prune shrubs that have just finished flowering, including spiraea and Kerria japonica. They produce their flowers on shoots that formed last year.
Continue to deadhead springflowering bulbs.
Start to buy tender summer bedding now if you have somewhere protected.
Clear blanket weed and duck weed from ponds.