Prune large and overgrown Clematis montana after flowering, cutting back hard to encourage new growth.
Continue to earth up potatoes to encourage them to root into a ridge of soil and develop a larger crop.
Pinch out the tips of trailing plants in hanging baskets to make them branch out. Pick off dead flowers.
Sow wallflowers seeds to transplant in the autumn
Use a soap-based spray to deal with heavy infestations of aphids
Continue slug patrols in the cool of the evening, or early morning, or after rain, to protect vulnerable plants
Buy bulbs for autumn blooms, including Nerine bowdenii, colchicums and autumn crocus
Take cuttings from osteospermum, fuchsia, pelargonium and argyranthemums, root them into small pots to produce young plants to keep through the winter
Take soft and semi-ripe cuttings using non-flowering shoots of shrubs such as cotinus, potentilla, hydrangea, spiraea and weigela.