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| Diseases of Roses |
1. Black Spots on Leaves
This disease is often referred to as black spot. Black spots appear as circular with fringed edges on leaves.
They cause the leaves to yellow. Remove the infected foliage and decide up any fallen leaves round the rose. Artificial sprays might be used to stop or treat this type of rose disease.
a pair of. Stunted or malformed young canes
Referred to as powdery mildew, this can be a fungal disease that covers leaves, stems and buds with wind spread white powder. It makes the leaves curl and flip purple. Spray with Funginex or Benomyl to treat this fungal disease.
3. Blistered underside of leaves
Referred to as rust, this disease is characterised by orange-red blisters that flip black in fall. It will survive the winter and can then attack new sprouts in the spring. Collect and discard leaves that are infected in fall. a Benomyl or Funginex spray every seven-10 days might help.
four. Malformed or stunted leaves and flowers
This is often caused by spider mites. They are tiny yellow, red or green spiders found on the underside of leaves where they suck juices. The application of Orthene or Isotox could help in treating this infestation.
five. Weak and mottled leaves with little white webs under them
This can be caused by aphids. They are small soft-bodied insects that usually brown, inexperienced or red. Often clustered below leaves and flower buds, they suck plant juices from tender buds. Malathion or diazinon spray could help roses to survive these bugs.
six. Flowers that do not open or are deformed when they open.
Thrips could be the explanation behind this drawback. They are slender, brown-yellow bugs with fringed wings that also suck juices from flower buds. Cut and discard the infested flowers. Orthene and malathion may also treat this problem.
Remember that roses are hungry feeders that need much fertilizer to become healthy bushes.
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