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Learn how to care for peonies with Chris Beardshaw's video guide, including advice on how to spot and deal with peony wilt and nutrient deficiency.summerMore advice on growing flowersDealing with peony wiltGrowing lupins video projectPlanting out

Carol Klein offers a practical guide to spotting and treating peony wilt, with tips on cleaning secateurs to avoid reinfection.summerMore advice on growing flowersCaring for peoniesGrowing lupinsPlanting out cerinthesGrowing dahlias from seed

Watch Sarah Raven's video demonstration of how to plant allium bulbs in the dry garden at Berryfields, with advice on the ideal location, soil condition, and planting depth.autumnMore advice on growing alliumsHow to collect allium seeds

dahliasHow to take dahlia cuttingsHow to grow dahlias from seedHow to tie-in dahliasDealing with cuckoo spit on dahliasBrowse a variety of dahliasChoose plant by flower colour

Sarah Raven demonstrates how to plant up dahlia tubers in trays indoors, to ensure a greater number of cuttings in summer.springMore advice on growing dahliasLift and store dahliasGrowing dahlias from seedTie in dahliasTaking dahlia cuttings video

Sarah Raven shows how to take cuttings from dahlia plants in her step-by-step video guide. She also gives a demonstration on how to make a simple propagation tent from a plastic bag, stakes and an elastic band.spring and summerMore advice on growing

Although, in some areas, dahlia tubers have survived the recent mild winters outside, it's well worth lifting and storing them. Discover how you can ensure a bumper crop of dahlias for next summer, whatever the weather.SecateursGarden fork

At this time of year dahlias are producing stunning showy flowers, but they lose impact if the stems flop forward under the weight of the flowers. To get the best dahlia floral display, tie their stems to canes as they grow to give them some support

Carol demonstrates how to create a mini-rock garden in a trough, recommending plant varieties and sharing tips on compost, drainage and top-dressing.springMore on growing alpinesMaking an alpine path and gravel bedPlanting up alpines video project

Summer is the ideal time to take verbena cuttings. Overwinter the semi-hardy perennials in a frost-free place and you'll have a fresh, healthy supply of verbena plants next year to replace any in the garden that have been killed by frost