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in as much light as possible Prune greenhouse vinesPick off faded leaves from plants to prevent spread of fungal diseasesSow lettuce, leeks and onions in a heated propagatorSow greenhouse tomatoes for early pickings

Clear out old tomato and cucumber cordons and add to the compost heapMove potted bulbs into the greenhouse to develop before bringing into the houseWater sparingly, aiming to keep the atmosphere as dry as possible over winterBring potted herbs under

Plant dahlia tubers in pots or trays, and place in a heated propagatorStart raising crops from seed, including tomatoes, chilli peppers, aubergines and cucumbersPrevent seedlings being affected by damping-off disease by watering compost with a

Sow seeds of greenhouse crops, such as tomatoes, cucumbers, peppers, chillis, aubergines and okra

eatenSow seeds of tomatoes, cucumbers, peppers and other greenhouse crops in a heated propagatorPot up begonias individually once new leaves have developedTake cuttings from houseplants including African violetsContinue sowing seeds of summer bedding

Fit automatic openers to greenhouse vents to encourage good air circulationPlant tomatoes in growing bags or large pots, training them on to canes or wires for supportBring pots of strawberries into the greenhouse to produce early flowers and fruit

greenhouse tomatoes to deter whiteflySet up a 'watering bench' using capillary matting to look after pot plantsSow seeds of Christmas cherry (solanum) to grow as winter pot plantsHang yellow sticky traps in the greenhouse to help control whitefly Thin out

Damp down the floor every morning and open ventsWater tomatoes regularly to prevent fruits splittingSow Primula malacoides and P. obconica for flowering pot plants next springHang yellow sticky traps in the greenhouse to help control whitefly

leaves from tomatoes to allow light and air to reach the fruits

hyacinthsPick remaining outdoor green tomatoes and lay out on staging to ripen Pay close attention to ventilation now, shutting vents on cool nightsWash off greenhouse shading paintWater dormant cyclamen houseplants to encourage them back into growth