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-summerKeeping other moths at bayCabbage white caterpillars on brassicas and nasturtiums.Codling moth on apples, pears, quince and walnuts.Mullein moth on verbascum, buddleja and figwort.Caterpillars on any plants.

.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

Create impact with your hanging baskets by following Rachel de Thame's comprehensive guide to planting up a traditional hanging basket, with advice on choosing and lining your container and tips on selecting and positioning your plants

be used on houseplants and in greenhouses to attack the western flower thrips. Organic pesticide sprays are available, which are based on plant oils or pyrethrum.Ornamental plants can be sprayed with insecticides containing imidacloprid with methiocarb

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

Follow Chris Beardshaw's step-by-step video advice on lifting and preparing dahlia tubers, for overwintering in a frost-free environment.autumnMore advice on growing dahliasVideo advice on planting dahlia tubersMore tips on lifting and storing

Regular watering is essential for summer bedding, vegetables, pots and hanging baskets as well as newly-planted trees, shrubs and herbaceous plants. Our tips show how to water your plants properly so that they can make best use of it and so that we

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

Learn how to grow dahlias for cut flowers, in Rachel de Thame's video demonstration. Rachel recommends varieties and shares tips on soil preparation, planting, feeding and staking young plants.early summerMore advice on growing dahliasLift and store