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fallen leaves. When pruning, cut out any stems with blackspot on. In late-winter, spread a thick layer of mulch around the base of the affected plant to prevent rain splashing soil-borne spores on to new spring growth. Grow rose varieties

Rose powdery mildew is a fungus that produces airborne spores from infected stems or buds on roses. After overwintering on your plants, the disease is most likely to flare up if the roots are in dry soil and the leaves are in humid air - conditions that are often found when plant...

causing the leaves to drop, is followed by black pustules on the leaves in late summer. By autumn it's almost inevitable that the leaves will drop off.Promptly prune out any infected stems and destroy them, along with any infected leaves. Grow roses

Follow Sarah Raven's step-by-step video guide to creating an attractive display of paper-white narcissi for the Christmas table. Sarah gives tips on compost, planting depth and how to support the flowers.autumnChristmasMore Christmas projectsHow to plant hyacinths in a pot.How to...

In this pot design, the graceful astelia and black ophiopogon add structure, while a small-flowered blue pansy or viola unites the blue pot and the plants.September - NovemberOctober - March30 minutesOphiopogon planiscapus 'Nigrescens' x2Astelia chathamicaPansies x3Blue glazed po...

grow, encourage their stems to weave together to create a glorious mass of foliage.Take cuttings of the plectranthus and overwinter in a frost-free conservatory or greenhouse. More ideas for growing begonias and plectranthusIncrease your plant stock

black pebbles on top of the compost - they not only look smart, but they also help to keep the plants' roots cool and moist.More contemporary planting ideasPlanting up a contemporary display of aloe variegata.Growing rudbeckia in a modern metal planter

will flower months.Try Nemesia 'Blue Confetti' if you want to vary the colour theme.More advice on growing pelargoniumsGrowing pelargoniums in a rustic container display.Learn more about regal pelargoniums.Planting up a slug-proof display of pelargoniums

, for delivery in autumn.Choose the right roseMore about growing rosesTake rose cuttings How to prune rosesTreating rose rustDealing with rose powdery mildew

Growing helleboresA must-have for the winter garden, hardy hellebores flower from late-winter to early spring. They also make great cut flowers - simply snip off flower heads and float in a shallow bowl of water.There are many varieties of hellebore