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When did you last lift and divide congested clumps of perennial flowers in your garden? You're not alone if you're struggling to remember, as this is a job I often overlook too.Hardy perennials just do their thing year after year, and I don't give

Chris Beardshaw demonstrates how to lift and divide congested clumps of autumn-flowering Nerine bowdenii, and suggests growing Nerine sarniensis in a pot. springhalf an hourMore advice on growing flowersBrowse a selection of tender perennial plants

Generate new plants from your hostas by following Monty Don's video guide to lifting, dividing and planting.spring and autumnPropagating plants by dividingIrisesHerbaceous perennialsAstersDay liliesView a selection of hosta plantsBrowse a variety

Joe Swift offers step-by-step video advice on propagating water lilies by division, with information on when to do it and a practical demonstration of dividing and potting them on.springMore on garden pondsGrowing marginal plants in a container

Irises can become congested over time, which tends to inhibit flowering. This can be remedied by lifting and dividing their rhizomes to give them a little more space. Wait until flowering is over before dividing the iris clump, discarding any old

Sarah Raven demonstrates how to divide asters to ensure the flower quality doesn't diminish over time.springDividing plants in your gardenHow to divide and replant snowdrops.Dividing day lilies video project.Dividing herbaceous perennials video

Watch Carol Klein's video guide to planting snowdrops 'in the green'. Carol also explains how to boost flowering of existing clumps by lifting and dividing.early springMore on growing snowdropsPractical project on lifting and dividing snowdrops

Create new plants for your garden by learning how to divide clumps of herbaceous perennials with Sarah Raven's video guide.spring and autumnDividing plants in your gardenIrisesHostasAstersDay liliesBrowse a selection of herbaceous perennials

Learn how to divide and pot on congested day lilies by following Chris Beardshaw's video advice.spring and autumnCaring for liliesPlanting lily bulbs in a potDeadheading liliesRemoving lily beetles from plantsDealing with lily mouldBrowse a variety

strong indication that the time has come for a bit of division. (Although this sort of behavior doesn't help!)To divide a plant, dig it up and discard the centre, as it is only fit for the compost heap. The healthy bits can then be split and replanted