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and kalanchoePick peppers, tomatoes, cucumbers and other greenhouse crops regularly to encourage further flowers to develop

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

blinds and shade nettingSow sweet peas for early flowers next summerClear out old crops in pots and growing bags, adding them to the compost heapBring pots of late-flowering chrysanthemums under coverLine the inside of your greenhouse with bubble

insideThin bunches of greenhouse grapesTake cuttings from pelargoniums, fuchsias, marguerites, penstemon, carnations, diascia and many othersDamp down the greenhouse floor each morning on hot days to increase humidityStand pot plants on capillary matting

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

Sow seeds of cucumbers, tomatoes, aubergines and peppers to raise summer cropsWater compost with a suitable pesticide where vine weevils have been discoveredSow summer bedding plants, such as petunias, geranium, verbena and busy LizzieTake cuttings from chrysanthemumsPick faded o...

Put up shading to reflect scorching sunlight and keep temperatures downOpen all vents on warm days, but close again in the eveningOrder plug plants and seedlings by post, and pot up as soon as they arriveTake leaf cuttings from houseplants, including African violets, begonias and...

Water crops in growing bags and pots daily, adding a liquid feed once a weekIntroduce biological controls if you have discovered pests, such as whitefly and red spider mitePinch out developing sideshoots on tomato stemsTrain cucumbers and tomatoes to supportsIncrease shading and ...

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 solution of copper fungicideSow cycl...

Buy plug plants and young bedding plants to grow on for baskets, pots and bedding displaysThin out heavy fruit sets on peaches and nectarines, leaving fruits about 10cm apartSow annual climbers, such as cup-and-saucer vine (Cobaea), nasturtium