If you happen to notice small circular black spots, your plant probably has what is known as the Black Spot. The spots have fringed edges, and are a sign of a disease. Artificial sprays may be used to treat the spots, but the affected leaves should be removed from the plant, as remaining leaves will allow the disease to spread to the rest of the plant.
If you notice that the leaves on your rose plants start to curl and turn purple, you should check the leaves and canes for a white powder, as these may be signs of a fungal infection known as powdery mildew. Spread by the wind, it may cause the canes to become stunted or malformed. Treat using Funginex or Benomyl.
Also know as rust, you may notice that the leaves on your roses may have orange-red blisters on them that turn black in the fall. It is important to remove these leaves in the fall, as the diesase can survive the winter and spread to new plants in the spring. A spray every 7-10 days with Funginex or Benomyl could help.
If you start to see yellow, red, or green spiders on the undersides of the leaves on your roses, you have spider-mites, which will suck the juices form the leaves the longer they are there. they are easily detected by spotting the leaves and flowers that are stunted or malformed. You can use Isotox or Orthene to aid you in treating this infestation.
If you happen to see that the leaves are mottled or have small white webs under them, these are caused by aphids. These small soft-bodied insects that are usually brown, green or red. Often clustered under leaves and flower buds, they suck plant juices from tender buds. Malathion or diazinon spray may help roses to survive these bugs.
If you see that your flowers don't open, or notice that they are deformed when they do open, Thrips are to be found as the cause. The slender brown-yellow bugs have fringed wings also are found sucking the juices from the plant. Remove the affected leaves , and use Orthene or Malathion to treat the problem.
If you notice that the leaves on your rose plants start to curl and turn purple, you should check the leaves and canes for a white powder, as these may be signs of a fungal infection known as powdery mildew. Spread by the wind, it may cause the canes to become stunted or malformed. Treat using Funginex or Benomyl.
Also know as rust, you may notice that the leaves on your roses may have orange-red blisters on them that turn black in the fall. It is important to remove these leaves in the fall, as the diesase can survive the winter and spread to new plants in the spring. A spray every 7-10 days with Funginex or Benomyl could help.
If you start to see yellow, red, or green spiders on the undersides of the leaves on your roses, you have spider-mites, which will suck the juices form the leaves the longer they are there. they are easily detected by spotting the leaves and flowers that are stunted or malformed. You can use Isotox or Orthene to aid you in treating this infestation.
If you happen to see that the leaves are mottled or have small white webs under them, these are caused by aphids. These small soft-bodied insects that are usually brown, green or red. Often clustered under leaves and flower buds, they suck plant juices from tender buds. Malathion or diazinon spray may help roses to survive these bugs.
If you see that your flowers don't open, or notice that they are deformed when they do open, Thrips are to be found as the cause. The slender brown-yellow bugs have fringed wings also are found sucking the juices from the plant. Remove the affected leaves , and use Orthene or Malathion to treat the problem.
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