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of the oldest stems from currant bushesLift and divide congested clumps of rhubarb, replanting into soil enriched with well-rotted manure

DonSarah Raven's video project on dividing astersTips on dividing irisesLearn about lifting and storing dahlias

to a length of about 20cmLift, divide and replant healthy portions of flag iris rhizomes into freshly prepared soil. Reduce their leaves by half to prevent wind rockWater sweet peas and give a liquid feed. Pick flowers or deadhead regularly

Move containers of shrubs or bedding to a sheltered spot FlowersDig over empty borders and pile manure on topLift and divide congested clumps of rhubarbCut down asparagus ferns and Jerusalem artichoke topsFruit & vegClear out old tomato and cucumber cordons

off shrubs and conifersPlace rabbit guards around trees to protect barkFirm down plants lifted by frost or wind rockAround the gardenDeadhead winter-flowering pansies and bedding plantsDivide congested herbaceous perennialsPrune winter jasmine to cut

Cottage, North Devon.The first episode covered January and February. Carol showed how to lift and divide snowdrops in her woodland garden, then demonstrated a rarely seen propagation technique called twin scaling. This technique is much used

Snowdrops transplant well when they are in leaf and even in flower and the bulbs can also be divided at the same time - a method known as 'in the green'. You can then replant new clumps of snowdrops in other places around the garden; it's a simple

iris that develops into a tight clump within a few years. Mine hasn't been divided for some time, so when the weather warms up in spring I really must lift the whole clump and split it up before replanting. There will probably be enough to give away a

well during the summer. In colder areas protect the rhizomes from frost from January onwards with cloches, horticultural fleece or a thick mulch of straw or compost.Growing tipsLift and divide schizostylis rhizomes from mid- to late-spring every two

returned.I'm no bird expert, but these harbingers of summer lift my heart when, as now, they scream their victorious celebration of return across the heavens. They made one low sweep together, a passing salute, then divided and wheeled off to the horizon. I