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Rose Leaves Article
This is a selection made from among articles on Rose Leaves. For a permanent link to this article, or to bookmark it for future reading, click here.
Rose Garden Enemies
from: Lawn and Garden MagicOne of the most common causes, if you're having any problems with your roses, is those sneaky little creatures that like to feast on every gardeners prized plants and flowers. Insects, if left to their own device, can do lots and lots of damage. Here's a brief overview on the worst of these nasty enemies of roses that will help identify them.
1. Aphids
Aphids are the super stars of destruction and one of the most common enemies of any garden. They usually make their home in the growing tissue of roses (buds and shoots). Low to moderate amounts of aphids arn't usually a major threat to your roses, but you should keep an eye on how much they spread. A high aphid investation could produce too much honeydew, which encourages the growth of mold which eventually blackens your rose leaves. An investation of aphids could also cause the size of the flowers to diminish and your buds will often die.
The natural enemies of aphics include lady beetles and syrphid flies who will help to keep their population growth under control. Once tactic for removing them from your roses is with a spray of water or you can try insecticidal soaps. Aphids can be a problem mainly during spring and early summer and you shouldn't have to use insecticides to control them.
2. Thrips
Thrips are nasty little enemies that will damage your rose blooms by leaving brown streaks on the flowers. They can become a major problem where rose bushes are planted close together since it's easy for them to move from one plant to another. Thrips are often attracted to the light colored or white roses in your garden and given the opportunity, will do a lot of damage. Thrips are hard to control with pesticides since they're most effective only at the development stage. Your best plan of action is to remove any infected blooms.
3. Spider Mites
Spider mites are often the cause of rose leaves becoming stippled or dried out and falling off. These mites are so tiny you'd have to use a magnifying glass to find them. Spider mites usually show up as the result of dry and dusty conditions, so do your best to control them by reducing the amount of dust and making sure your plants have enough irrigation.
4. Fuller Rose Beetles
The adult beetles like to chew away at the flowers as well as leaves of your rose bush. Their presence can be detected when you observe ragged edges developing on your blooms and foliage. They like to feed at night and then hide away during day time on the underside of leaves. Unfortunately, pesticides aren't very effective dealing with these pest, which means your best solution is to simply pick them off your plants and dispose of them.
5. Leafcutter Bees
If you observe any semicircular holes in leaves it's the work of Leafcutter bees who take the material back to their nest. This is something you'll just have to live with since there's really no effective way to combat these creatures other than killing them, which isn't a good idea since bees are natural pollinators that you want to be in your garden.
6. Caterpillars
Some caterpillars will feed on rose leaves, but the damage isn't usually life threatening to your rose plants. You should just remove any rolled leaves and prune the damaged buds.
7. Rose Slug
Rose slugs are the larva of sawflies, but look much like caterpillars since they have legs. Try washing them off with a forceful spray of water or just leave them to their natural enemies who will hopefully take care of this problem and save you the trouble.
8. Flat headed Borers
Flat headed borers often cause the canes to die back or they might kill canes and even the entire rose plant. You must get rid of any material infested with these nasty little critters. You can keep your plants healthier if you don't over prune during the summer and making sure they have enough irrigation.
9. Rose Curculio
Rose Curculios really like your yellow and white roses and will feast on them. These creatures are about a quarter of an inch long and like to punch holes in your flowers and buds. Thier larvae just have a feast on your developing buds, killing them even before they can open. Any infestation of rose curculios can be eliminated with an insecticide available at your local home or garden center.
10. Scale Insects
Scale insects pose a major threat to the canes. They have armored scales and look like small, grey rounds or ovals. These guys don’t move around since they have no legs for most of their lives so if you find them they're usually there to stay. Your best plan of action here is to prune away infected canes while also putting pesticide oil on remaining canes.
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