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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

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

as the flowers begin to fade. Most herbaceous plants can be cut back after flowering or at the end of the growing season.Established plantSecateursLong-handled loppersPruning sawOctober - March30 minutes Where buds are visible, prune just above them to prevent

are then infected, they too eventually turn yellow and drop. If not dealt with, the plant will weaken.Rose black spot is very similar and can be dealt with in the same way.Leaves are marked with purple or brownish-black spots, then turn yellow and fall. Smaller

Chris Beardshaw demonstrates how to plant a rambling rose, offering tips on how to select the perfect rose, pruning and training.summerMore advice on growing rosesPruning a rambling rosePlanting a bare-root rosePruning shrub rosesPlanting a rose

want the new growth.AdamAvoid spreading disease by always making sure your secateurs are clean and sharp.Always try to prune when the rose is dormant - after autumn leaf fall and before the buds break in spring.More advice on growing rosesPruning shrub

to the same plant. It's only a significant problem when young plants are being defoliated or you're growing specimens for a show. Bees snip out elliptical sections of leaf margins, particularly on roses, and use them to make thimble-shaped cells in their nests

Left unchecked, canker can gradually spread to affect whole branches and sections of trees. Severely-infected old trees may be beyond rescue, while young trees are vulnerable to infection, particularly where other susceptible trees are growing

with the hose.roses, dahlias, fuchsias, lavender, rosemary and many garden plantsspring, summer, autumnMore common garden pestsCapsid bugsEuonymous scalePhormium mealybugScale insects

Sarah Raven demonstrates how to plant a bare-root tree or shrub in a pot, before planting out in its permanent border position.October-November, February-MarchMore planting advicePlanting a bare-root rosePlanting a shrubPlanting a bare-root tree