Nigel Colborn's Action Plan: Crucial jobs for your garden this week 

Tomatoes are at their most productive now and you may have a surplus on your hands.  They're perishable, but luckily are easy to preserve for future use. The simplest way is to freeze them fresh, whole and raw.  Place batches of freshly picked, clean tomatoes into freezer bags. 

This time of year sees a mood change in our gardens to softer colours. Bellflowers are mainly blue shades, but can be white or lilac pink. Tall varieties make great border plants.

This is peak time for gathering seed if you want to raise your own plants to flourish in the garden for the coming year.

Plug some gaps in your garden with the beautiful 'Monch' flowers, the most popular Michaelmas daisy, for a splash of colour and enjoy an even better display from them the coming year.

Lilies make superb cut flowers, too. Many are powerfully fragrant, have attractive foliage and are long lasting. Potted lilies are on sale now. Use them as gap fillers or to transfer to larger containers.

Bing

Keep summer alive with these late-flowering shrubs and trees 

There are even trees whose September blossoms are so spring-like that they're bound to turn heads. Shop around for late-flowering woody varieties and you could make some inspiring discoveries. Garden centres offer some but, if you visit well-planted gardens this August, you'll be surprised by what you find.

A bunch of freshly picked radishes in the hands of a female gardener UK

If you haven't sown pea seeds yet - or if there were problems with earlier crops - there's still time to re-sow. Tender plants, newly outdoors, still need to be acclimatised despite the warm weather.

ROSA 'HARLOW CARR' (ROSE BUSH ENGLISH AUSHOUSE). ROSES DAVID AUSTIN

Heavy rain storms have ruined rose blooms over much of Britain. Most will flower again, of course, but all roses will benefit from a clean-up, Remove dead flowers, cutting just above an outward-facing bud.

Pinks offer a sensational show when they flower in June and July. If bought in pots, they can be planted whenever you like. The best time to take cuttings is between now and late July.