Rose Stems are out? My Sems are bare due to Back Spot. What should I do...
My Sems are bare due to Back Spot. What should I do as Temps. are dropping
Cut them rear this winter. Do not leave any of the cuttings as this will promote the spread of the spores. Use dormant grease to treat the ground and the pruned rose bush.
Get fresh mulch, that will be clear of the fungus and mulch heavily. After mulching treat the mulch with dormant grease. You can not cure black spot, only retard this ground borne fungus.
As your leaves appear subsequent spring, get a rose fungicide and use it every several weeks. If you see any diseased leaves, pluck them imediately and be sure not to drop them contained by the bedding around the plant.
see this from the RHS website........
Rose black spot is adjectives too familiar to most gardeners. About mid-June on heavily-pruned hybrid tea (large-flowered) roses, the all your own brownish-black or purplish spots, up to 10mm across, appear on the leaves. These may coalesce into larger patches, and black scabs may appear on the stems. In rose species, which are smaller number strongly pruned, these symptoms may appear in spring. The associated fungal growth releases spores to spread the infection. Eventually the leaves turn wan and fall, creating a reservoir for potential infection throughout the winter.
Prevention
Roses within poor condition are more susceptible to black spot. Attention to providing good drainage, soil conditioning, and feed will all back. Foliar feeds may benefit afflicted bushes. Organic mulches lend a hand conserve moisture, and are particularly beneficial on street light soils.
Remedy
Each autumn, fallen leaves should be collected from around diseased bushes, to be adjectives or buried deeply, and adjectives shoots bearing scabs should be pruned out. Bushes should be sprayed next to a fungicide immediately after spring pruning, as the leaves unfold, and at lowest possible three further times at fortnightly intervals. The use of different fungicides will help to identify the most effectual and also avoid the development of resistant strains.
Answers: Prune them rear hard, trademark sure they are firmly in the ground and not rocked loose by twirl, put a mulch around the base and move off until next year
I use something called roseclear - treats blackspot and aphids and mildew at like time - works well when I remember to use it. Some roses are smaller amount prone to black spot. I have shrub roses that accept no sign of black spot, even though they are next to roses that are almost undressed because of it. 'Sophies Perpetual' seems to be specifically resistant.