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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 seedsDiscover plants suited to dry soilChoose all...

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

Dry compostStorage box or containerautumn30 mins, plus drying timeUsing secateurs, cut down dahlia stems to a few centimetres from ground level and compost the leaves.Dig all around the dahlia clump and lift the tubers with a fork, taking great care

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

Making an alpine container displayCreating an alpine pebble displayBrowse plants by soil typeBrowse plants by flower colour

.Verbena plantsSharp knife10cm potsFree-draining compost (multi-purpose and perlite mix - see Adam's tip)Rooting hormone (liquid or powder)Clear polythene bags and rubber bandsJuly - September45 minutesTake cuttings in the morning when shoots are at their firmest