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Aptly named blackspot is a fungus that causes dark spotting on rose leaves and stems. Eventually, leaves turn yellow and drop off before autumn. Spores overwinter on the fallen leaves and re-infect the plant in spring when new foliage appears

and leaf stalks of roses to more obvious orange speckling on the leaves. This can lead to leaf fall. In late summer, look out for black pustules on the leaves.Learn more about rust and hollyhock rustOrange speckling on rose leaves in early summer, sometimes

, preventing the flower from opening. An invisible soft, slimy layer of mycelium then fuses the petals together. The problem is most acute on roses with a multitude of thin petals.Apparently healthy rose buds develop and fatten but fail to open. They eventually

Watch Monty's video guide to planting shrub roses, and pick up tips on planting depth, preventing root rock and deterring aphids.spring or autumnMore advice on caring for rosesAdvice on pruning shrub rosesHow to plant a rose bushPlant a rambling

Learn how to plant a rose with Monty Don's video advice on how to avoid problems with suckers and root rock.spring or autumnMore advice on growing rosesMonty on pruning shrub rosesPlanting a rose video projectPlanting a rambling rose against a tree

The rose leaf rolling sawfly injects a chemical into young rose leaves to cause them to curl protectively around her eggs. Within a week the eggs hatch into green caterpillars that start to eat their home. In mid-summer, leaving behind skeletonised

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

into the soil in the garden.More advice on growing rosesSarah Raven's guide to planting rosesPlanting a rambling rose against a tree, with advice from Chris BeardshawPruning a rose bush.Planting a bare-root rose

Pruning roses keeps them in shape and encourages more flower growth and healthier plants. Cut weak shoots right back to promote stronger growth from the base.Rose bushSecateursautumn or spring20 minutesRemove dead shoots and the tips of stems

Sarah Raven demonstrates the best method for planting a rose to avoid root rock and sucker growth.spring or autumnMore advice on caring for rosesPlanting a rambling rose against a tree video projectHow to plant a rose, with Monty DonPruning shrub