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setting seed, and to keep plants looking tidyWater hanging baskets and pots of summer-flowering bedding plants. Never let compost completely dry out or it can be very difficult to re-wet

Plant up hanging baskets, and leave them in a sheltered spot before hanging fully outsidePlant out potted alliums in groups to add interest to flower bedsPrune spring-flowering shrubs immediately after flowering, such as forsythia, ribes

shrubs and pot them up in gritty compostRub greenfly off rose buds, or apply a soap-based sprayLightly trim broom and genista after flowering to keep plants in shapeWater newly planted trees and shrubs if conditions turn hot and dryTidy up rock gardens

Deadhead flowers of lady's mantle before they set seedWater camellias to make sure they don't dry out while the flower buds are developingBuy bulbs for autumn planting including tulips, narcissus, alliums, iris and crocusTake cuttings from tender

Plant out dahlias into well-prepared soil that's been enriched with manureCut down pulmonarias to just above soil level after flowering to encourage new foliageClip box hedging and topiary to keep it neatRegularly tie tall stems of delphiniums

Collect and sow seed from foxglovesTake cuttings from pinks (Dianthus)Prune philadelphus after flowering, removing stems carrying old flowers. Cut out very weak stems and some of the oldest woodFeed dahlias with a liquid fertiliser and ensure plants

Take cuttings from delphiniums using strong young shoots, and root them in free-draining compostWash off greenfly from shoot tips with soapy waterFeed rhododendrons, azaleas, pieris and camellias with ericaceous (acidic) plant foodSeveral shrubs

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

Save seed from ornamental annual quaking grass and many other garden plantsWater camellias regularly as drought can cause the buds to drop next springSummer prune wisteria, shortening long sideshoots back to five or six leavesDeadhead roses, unless

, weigela, escallonia and kerria where necessary to control growthWater all ericaceous (lime-hating) shrubs, including camellias and rhododendrons, with a generous helping of sequestrene plant tonic, Miracid or a similar fertiliser specially formulated