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, and water clumps with a generous helping of liquid feedPrepare to cover fruit tree blossom with horticultural fleece to protect flowers if frost is forecast Sow seeds of the following crops outside this week: beetroot, lettuce, salad leaves, watercress

Sow seeds of herbs in pots to grow on your kitchen windowsill, such as coriander, parsley and basilLook out for woolly aphid on fruit trees, and spray any with soapy waterThin out seedlings from earlier sowings to their final spacings

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

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

heaters regularlyCheck plants for signs of overwintering pestsPick faded flowers and dead leaves from plantsWater potted bulbs to ensure they never dry outScrub down staging and framework with disinfectantWash glazing inside and out to let in more light

Keep potted herbs on the staging to crop over winterMove potted bulbs into the greenhouse to develop before bringing into the houseClear out old crops and growing bagsWater sparingly and aim to keep the atmosphere as dry as possible over winter

Clear leaves from greenhouse guttersCheck heaters daily to ensure they are working efficiently and that fuel levels don't need topping upPick off dead flowers and leavesWater overwintering plants such as pelargoniums sparinglyWash glazing inside

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

Pick dead flower-heads off rhododendrons and azaleasHoe borders to keep down weeds, or treat with weedkillerScoop floating weed out of garden ponds with a netFeed lawns with a liquid or granular lawn fertiliserTrim hedges like privet and Lonicera

Prepare soil ready for sowing a lawn or laying turf during September and OctoberTop up water levels in pebble fountains and poolsDeal with problem lawn weeds, digging them out or applying herbicideOrder spring-flowering bulbs to plant this autumn