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. Top up the box with more compost, gently firming it around the plant roots with your fingers.AdamScabious is a short-lived perennial, but luckily it's easily propagated by taking cuttings in early spring.If you can't find this deep red scabious, try

sticky yellow traps to catch whitefly and flying insectsPropagate houseplantsRepot any plants that are pot bound or getting top heavyGreenhouse50 minutes for medium-sized tree Find out how to encourage clusters of fruit on your apple trees

Layer a rhododendronRhododendrons are beautiful shrubs but they come with a less than attractive price tag. A simple propagating technique called layering is a great way to get more plants without breaking the bank.Pick off rose leaves infected

and early autumnGreenhouse45 minutes Find out how to propagate verbena

Ventilate the greenhouse on warm daysGreenhouse45 minutesLearn how to propagate roses from cuttings

Take root cuttingsWinter is the ideal time to propagate perennials from root cuttings. Follow our step-by-step guide and you'll have plenty of new plants to beef up your borders in spring.Move worm compost bins under cover for winterEmpty glazed

; for the first time I've been able to run an extension to my greenhouse to power an electric propagator. When temperatures all around have fallen, the propagator maintains a warming 20Ë?C, perfect for germinating most seeds.I always grow an assortment of chillies

the melianthus I raised from seed, and quite large pots of agapanthus that I probably couldn't replace, and which would take an age to grow again.A large electric propagator does provide an alternative for seed raising, just warming the area I need for seeds

patch, be sure to allow sufficient space for the fully mature crop.Pumpkin seedsSmall potsSeed compostHeated propagator or warm windowsillWell-rotted manure or compostVented bell clochemid-March to mid-June18-22 weeks from sowingSow seeds individually

. Cover with a propagator lid or plastic film.Keep the tray on a sunny windowsill or in a heated propagator until germination. Thin seedlings to leave one or two per module.