Lift and divide primulas, forget-me-nots and polyanthus. Finish planting out annual climbers and start training new growth and flower stems of perennial climbers like clematis, honeysuckle and climbing roses. Support the developing flower stems of tall plants like lilies, gladioli, peonies or delphiniums, especially if they are in an exposed garden.
Keep your borders in full shape by regular forking to relieve compaction of soil and remove weeds. Also fork in a general fertilizer round established plants. Roses also need a generous feeding round the base, taking care not to harm their roots when forking. Help fruiting trees and bushes by spreading a thick layer of garden compost round them to conserve soil moisture.
Mint is used in many dishes but if is not grown in pots it may become invasive in your garden. Lift and divide mint this season but make sure to remove as much as possible of the roots spreading out from the plant to prevent it to spread.
Tuck straw under strawberries to protect the fruits from rotting or being spoiled by rain-splashed soil and slugs. If you do not wish to propagate your strawberries from runners then remove them to conserve the mother plant energy. If you want to propagate your strawberries then keep only 5 or 6 runners per plant and peg them into small pots of peat-free compost which have been sunk into the ground around the parent plant.