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hardy annuals in late March and into April, digging over, weeding and enriching the soilLift and divide congested border plantsPlant out lilies to fill gaps in borders, or grow them on in pots Trim winter-flowering heathers

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

Deadhead dahlias to encourage further blooms to formCut down perennials past their primeSow hardy annuals, like poached egg plant, for early flowers next year

Prune rambling roses, removing shoots that have finished floweringPlant conifers, shrubs and hedgingTie tall chrysanthemums to supportsPlant autumn crocuses, sternbergia, colchicums, hardy cyclamen and nerinesDig up hardy annuals if you don't want them to set

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

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

and rhododendrons, taking care not to damage developing new leavesSow seeds of fast-growing hardy annuals, such as escholzia or poached-egg plant, to fill gaps

and paulowniaFork and rake over the soil in border areas where you want to sow hardy annual flowers

Sow hardy annuals in borders for earlier flowers next summerPrune tall rose bushes and standard roses to reduce wind rockPinch out sweet pea seedling tips for bushier plants and more flowers next year

and containersPlant wallflowers, pansies, forget-me-nots and other spring beddingLift and divide congested clumps of perennialsLift gladioli and store their corms after the flowers have fadedSow hardy annuals outside for early flowers next summerBuy spring-flowering