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, to promote new growthLift and divide large clumps of hostaTrim winter-flowering jasmine and tie in new shoots to supportsSprinkle granular fertiliser around clumps of spring bulbsFinish pruning roses as soon as possibleCut down all previous year's growth

, chaenomeles, pyracantha and kerriaRegularly water newly planted trees, roses, shrubs and hedging Finish planting out gladioli corms in groups or drifts in bordersSpread shredded bark mulches around established shrubs and trees to conserve soil moisture

Gradually lower the cutting height of your mower as grass growth increasesSpray roses showing signs of diseases such as blackspot, rust or powdery mildewApply a combined weed, feed and moss killer to your lawn if you think it needs itTop up water

Use secateurs to remove suckers growing from the stems of standard rosesTie tall border plants like delphiniums to their supportsFinish planting out dahlias, cannas and summer beddingCut back dead and dying foliage on spring bulbsDeadhead camellias

Tie shoots of honeysuckle and climbing roses to supportsPinch out the shoot tips of dahlias to encourage branchingDeadhead lupins as soon as the flowers have fadedPropagate wisteria, clematis, honeysuckle and ornamental vines by layering

Lift, divide and replant congested flag irises after floweringDeadhead border perennials like delphiniums and lupins to encourage a second flush of bloomsPick dead flowers off rhododendronsDeadhead roses to encourage more flowersCut back ceanothus

seed heads to keep them floweringShorten shoots on choisya to encourage a second flush of flowersFeed roses to keep them flowering stronglyPinch out the shoot tips on fuchsias and bedding plants for bushier growthSave seed from foxgloves and sow right

that look straggly to encourage new growthShorten half the shoots on broom and genista to encourage new growthPlant autumn-flowering bulbs such as nerines, colchicums, sternbergia, autumn crocuses and Amaryllis belladonnaSpray roses with fungicide to prevent

Deadhead pelargoniums and other summer bedding plantsSummer prune wisteria, cutting back whippy sideshoots to about 20cmWater plants in pots and basketsTake cuttings from shrubs choosing non-flowering shootsCollect seed from flowers that you want

perennials and bedding plantsCollect seed from any flowers you fancy propagatingTrap earwigs among dahlias with upside-down pots stuffed with straw and balanced on canesPick leaves off plants affected by rose blackspotTrim conifer hedges and evergreen hedges