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Plant tomatoes in large pots or growing bagsOpen all vents on warm days, or install automatic vent openers, to encourage good air flowSow tender primulas, such as Primula obconica, P. kewensis and P. sinensis, to grow on as houseplantsTake cuttings

This year has been a good year for tomatoes, but also a good year for blight. Blight, Phytophthora infestans, is a fungal infection, spread by spores in water droplets. Affected tomatoes develop brown, sunken patches, which spread to the stems

Pinch out tomato sideshoots developing from the main stemFit automatic vent openers to help control air flow and fit extra low-level louvre vents if requiredTie in tomato shoots to their supports. Water daily to prevent the compost drying out, which

.I love the way home-grown salads start off as a meagre collection of leaves in spring, then steadily grow as tomatoes, broad beans and other ingredients are ready to harvest. The watercress growing in my pond is always the first leaf crop I pick, followed

Regularly water crops in pots and growing bags, daily if needed in warm weather Plant trailing tomatoes in hanging basketsFeed young plants weekly with a solution of liquid fertiliserVentilate the greenhouse during the day, but close vents

Tie greenhouse tomatoes to their supports as they growFeed plants with full-strength fertiliser solution once a week, or apply a more diluted feed every few daysApply shading paint or put up shade netting or blindsOpen doors and vents daily

Train cucumbers and prune back sideshootsPick off flowers on coleus to maintain their colourful leavesWater tomatoes regularly to prevent fruits from splittingTake cuttings from fuchsias, coleus, pelargoniums, marguerites and other tender perennials

Feed tomatoes in growing bags and pots with a liquid high-potash fertiliser Plant nerines, lachenalia and veltheimia bulbs in potsTake leaf cuttings from begonias, Cape primroses and African violetsSow winter lettuces in potsPot up clumps of chives

. I potted on my peppers and tomatoes, as they kept drying out in no time, their root systems filling the tiny pots. They're now potted into 2 litre pots and should grow nicely. I only grow a few tomato plants on the allotment, as we seem to get quite

Monty Don explains the best methods of harvesting fruit from cucumber plants, with tips on recognising and removing male flowers.summerMore advice on growing fruit and vegMonty's video demonstration of how to harvest carrotsSowing beetroot seeds