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Plant bulbs, corms and tubers like achimenes, begonias, gloxinias in potsSow coleus and other houseplantsWatch out for pests, like whitefly and red spider mite, and treat at oncePut a mouse trap in your greenhouse if you find seeds and plants being

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

Water tomatoes regularly to prevent fruit splitting and blossom end rot Feed tomato crops with a high-potash tomato fertiliser every weekBe on the lookout for aphids, vine weevils and other pestsVentilate daily and add extra shading if temperatures

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

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

Line greenhouses with bubble polythene for insulation against falling night temperatures Clean staging and capillary matting to use next yearBring pots of tender agapanthus and eucomis under coverCheck all plants for signs of pests and treat

tender perennials, like fuchsias, from summer displays and bring into the greenhouseRaise roller blinds, but roll them back down on very bright daysLet sweet peppers develop their full colour and size before pickingLook out for pests and diseases