Dealing with Rose Diseases
Despite a gardener’s best efforts, roses can often become infected with fungus diseases.To make certain that your valued roses remain in the best of health, just follow these points.
1. Black Spots on Leaves
This disease is generally called black spot. Black spots look as circular with rough edges on leaves. They make the leaves to yellow. Get rid of the infected leafage and pick up any fallen leaves around the rose. Artificial sprays perhaps used to prevent or treat this sort of rose disease.
2. Stunted or malformed young canes
Called powdery mildew, this is a fungous disease that covers leaves, stems and buds with wind spread white powder. It makes the leaves curl and turn purple. Spray with Funginex or Benomyl to treat this fungal disease.
3. Injured undersurface of leaves
Called rust, this disease is defined by orange-red blisters that turn black in fall. It may survive the wintertime and will then attack new sprouts in the spring. Collect and throw out leaves that are infected in fall. a Benomyl or Funginex spray every 7-10 days may aid.
4. Malformed or stunted leaves and flowers
This is caused by spider mites. They’re small yellow, red or green spiders found on the undersurface of leaves where they suck juices. The application of Orthene or Isotox may aid in treating this infestation.
5. Weak and mottled leaves with small white webs under them
This is caused by aphids. They’re small soft-bodied insects that typically brown, green or red. Often clustered under leaves and flower buds, they suck plant juices from tender buds. Malathion or diazinon spray may aid roses to survive these bugs.
6. Flowers that don’t open or are deformed when they open.
Thrips could be the reason behind this trouble. They’re 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 handle this trouble.
Remember that roses are hungry feeders that need Greater fertilizer to become healthy shrubs.