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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

to supportsIncrease shading and ventilation to keep temperatures down on hot daysTake cuttings from hydrangeas, fuchsias, pelargoniums, osteospermums, marguerites, coleus and verbena

cover to continue cropping over winterVentilate the greenhouse on warm daysLine the glass with bubble polythene for insulationPropagate perennials from root cuttings including phlox, rhus and mintPlant bulbs in large pots of compost ready to fill any

Plant hippeastrum bulbs for spring displaysInsulate your greenhouse with bubble polythene for insulationVentilate greenhouses on warm, dry daysUse rainwater to keep the compost of potted azaleas constantly moistCheck fuel levels in paraffin and gas

to reduce the spread of diseaseCheck dahlia tubers and bulbs in store for signs of rotPick off fading or diseased leaves from pelargoniums and other plantsContinue ventilating the greenhouse on warm daysCut down chrysanthemums after floweringPrune dormant

and out to let in more lightTake root cuttings of perennials including phlox and oriental poppiesPlant hippeastrum bulbsUse rainwater to keep the compost of potted azaleas constantly moistVentilate greenhouses on warm, dry days

Protect pots of seedlings from the cold by making mini-cloches from empty plastic bottlesPrick out seedlings once they have developed their first true leavesOpen doors and greenhouse vents on warm days to improve ventilationSow herbs into pots

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

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

the greenhouse border and dig in fresh compostPlant dwarf irises, hyacinths and crocuses in potsRemove faded leaves and flowers from plants to prevent grey mould spreadingVentilate greenhouses on warm days but close vents at nightCover poinsettias to give them