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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

or trays, including basil, chives, parsley, fennel and coriander Plant up pots with the summer-flowering bulbs tiger flower (Tigridia), gloriosa and eucomisStart feeding houseplants weekly with a liquid feedPinch out shoot tips on fuchsias to encourage

Buy pansies and other winter bedding plug plants to grow on under coverDamp down the greenhouse floor every morning on hot daysWater plants in pots and growing bags every morning, and again at night if necessaryAdd liquid feed to at least one

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

and morning glory (Ipomoea)Grow an early crop of dwarf French beans in a large potRepot any top-heavy or pot-bound houseplantsStart feeding young plants about 3-4 weeks after potting up in fresh compostPot up rooted cuttings and seedlings

strongly rooted plants that will survive the winterFeed crops in growing bags and pots every weekWatch out for vine weevil beetles and larvae, and treat compost with a suitable product such as Provado Vine Weevil Killer 2

Hang up yellow sticky traps to monitor and control whitefly and other flying pestsFeed begonias and other plants in potsTreat red spider mite with a biological controlTie ripening melons to sturdy supportsPot on rooted cuttings to keep plants growing

Scrub off shading paint and wash the glass thoroughly inside and out Listen out for weather forecasts of early frosts and be ready to bring tender potted plants under coverVentilate the greenhouse on warm days, but close doors and vents every