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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

Pruning roses keeps them in shape and encourages more flower growth and healthier plants. Cut weak shoots right back to promote stronger growth from the base.Rose bushSecateursautumn or spring20 minutesRemove dead shoots and the tips of stems

Wash glazing inside and out to let in as much light as possibleBring potted camellias into unheated porches or conservatories to enjoy early displaysBuy chrysanthemum cuttings or take cuttings from your own plantsSow seed of hardy annuals

Hand pollinate the flowers of peaches and nectarine, with a soft brushCut off hippeastrum flower heads, leaving the stalkSow summer-bedding plants in trays in a heated propagator or in the greenhousePlant dahlia tubers in trays to encourage shoots

Carol Klein demonstrates how to cut back ornamental grasses in spring, with tips on different methods for dealing with evergreen and deciduous species.springMore on grassesOrnamental grasses from the RHS Chelsea Flower ShowPlant profile of feather

, trim the new growth using a pair of garden hand shears. For the top, make sure that you keep the blades horizontal to get a level surface. Cut back to a couple of leaves above where the current growth starts.AdamFor complex topiary shapes, it's easier

Mint plants give the best flavour and fragrance from new growth and are renowned for their vigour. So take cuttings in spring and you'll have young mint plants bursting with flavour and ripe for the picking to last you all summer. Mint plant

Mow lawns regularly, gradually lowering the height of the cut as spring progressesTreat problem weeds, such as nettles and brambles, with weedkillerTidy up hedges, but before you start cutting make sure no birds are nesting in them Keep large sheets

Take cuttings from shrubs including pyracantha, cotinus, hypericum, potentilla, honeysuckle, ivy, hydrangea, spiraea and rosemaryPrune out plain green shoots from variegated trees and shrubsCut lavender for drying when in full flowerCut back pansies

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