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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

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

Prick out petunia seedlings once they've developed two true leavesSow French and runner beans in pots Put up greenhouse shade netting if the sun is out and conditions are hotPlant up hanging baskets and patio pots with summer beddingBuy young plants

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

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

Increase greenhouse shading if temperatures inside are getting very hotTake cuttings from houseplants such as weeping figs and Christmas cactiDamp down the greenhouse floor every morningWater pots and growing bags dailyPlace potted tagetes near

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

Take cuttings from tender perennials and bedding plants, such as verbenaSow a few pots of hardy annuals to provide early spring blooms Shade delicate plants to avoid sun scorch on hot daysDeal with vine weevil by watering pots with a solution

Take root cuttings from Japanese anemones and oriental poppiesPot up prepared hyacinths into bowls for indoor displaysPot up rooted cuttings taken in summer and early autumnPlant paper-white narcissi in potsRemove shading paint and netting to let

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