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Sprinkle granular fertiliser round roses, shrubs and along the base of hedgesSow sweet peas into deep potsTransplant evergreen shrubs and conifers to new sitesPlace grow-through plant supports over tall-growing perennials, like delphiniumsDivide spreading clumps of perennials, su...
Fill gaps in flower beds with primulas and polyanthusPrune forsythia and flowering currants as soon as flowers have fadedLeave daffodil foliage intact for at least six weeks after flowering to regenerate bulbs, so they'll bloom again next year
Tie in young delphinium growth to plant supportsSow seeds of hardy annual flowers directly into beds where you would like them to bloomStart to regularly spray roses that are vulnerable to disease Lift and divide clumps of hemerocallis
Tie in shoots of clematis and climbers to trellis and supportsPlant out chrysanthemums for autumn flowersPrune overgrown Clematis montana after flowering, cutting lanky growth back hard to promote new shoots from the baseLift and divide congested
Deadhead winter-flowering pansies and bedding plants, and pick off damaged leavesDivide congested herbaceous perennialsPrune winter jasmine to cut back flowered shootsTransplant shrubs growing in the wrong place while they're dormantPlant lily
Prune back shoots on mophead and lacecap hydrangeas to a pair of budsTrim all foliage from barrenwort (Epimedium) before flowers start to developPlant lilies in potsPrune mahonia, removing old stems to make room for new growthLift and divide
Plant lily bulbs in pots for colourful summer displaysPrune shrub roses to low new shootsCut back overgrown honeysuckle stems close to their base, just above new shootsTrim back old shoots of perennials left for winter interest, taking care not to damage emerging new growthPrune ...
Plant out perennials in groups of three, five or seven for maximum effectSprinkle fertiliser around clumps of tulips to boost floweringSow hardy annual flowers directly into beds where you'd like them to bloomPrune Himalayan honeysuckle (Leycesteria
Sow sunflowers outside, directly where you want them to bloomTrim winter-flowering heathers, removing faded flowers and tidying up their shapePick off faded flower heads from hyacinths, to prevent them wasting energy setting seedPlant groups
Plant gladioli in groups to depth of 10-15cm, planting onto gravel if you have heavy soilComplete outside sowings of hardy annual flowers Lightly clip box edging and topiary to neaten them upSpray new leaves on disease-prone roses with fungicide