Flower Content
1. Black Spots on Leaves
This disease is commonly known as black spot. Black spots appear as circular with fringed edges on leaves. They cause the leaves to yellow. The solution is to remove the infected foliage and pick up any fallen leaves around the rose. Artificial sprays may be used to prevent or treat this kind of rose disease.
2. Stunted or malformed young canes
Known as powdery mildew, this is a fungal disease that covers leaves, stems and buds with wind spread white powder. It makes the leaves to curl and turn purple. Spray with Funginex or Benomyl to treat this fungal disease that could ruin your rose garden.
3. Blistered underside of leaves
A disease of roses known as rust, it is characterized with orange-red blisters that turn black in fall. In spring, it attacks new sprouts. This disease can even survive winter. What you can do is to collect and discard leaves that are infected in fall. Benomyl and Funginex spraying every 7-10 days may help.
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June 26 2008 08:35 pm | General