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Plant summer bulbs, such as liatris, begonia, gloxinia, gloriosa, canna, eucomis and agapanthus Maintain frost-free conditions by installing a thermostatically controlled electric fan heaterBring pots of spring bulbs into the greenhouse to encourage

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

Sow onion seed under cover, and keep warm until germinatedCheck overwintering plants for signs of greenfly and other pests, and treat if necessaryBring potted strawberries under coverDig up clumps of rhubarb to force into growth in darkness under

Insulate your greenhouse by lining the inside with bubble polytheneBring tender plants under coverSow sweet peas in deep pots and overwinter in the greenhouse or a cold frameCheck greenhouse heaters are working efficientlySpread out harvested onions