Insects might be responsible for some of the problems you are experiencing with your roses. These insects can be your roses' worst friends, and will cause major damage if you do nothing to keep them away. These are some of the top ten most wanted enemies of your roses, and some ways to identify them and get rid of them.



1. Aphids

Aphids are the most frequent insect problem you will find in your roses. These insects like to make themselves comfortable in the roses' growing tissues like buds and shoots. Aphids usually are just a problem during the spring and early summer.

Although few - or even moderate - numbers of aphids won't cause much damage to your roses, you need to watch them and make sure their numbers don't spread. A large group of aphids can produce honeydew, a waste product that has the consistency of a sugary liquid. This honeydew can encourage mold; the mold eventually will blacken the roses' leaves. Flowers may decrease and new buds may be killed if there are large numbers of aphids in your roses.

You may not need to use insecticides to control your aphids. They have some natural enemies, including syrphid flies and lady beetles. If these insects aren't around to deter your aphids, you can try washing them off of the roses with water or special types of soaps.

2. Spider Mites

Spider mites may be to blame if you notice that your roses' leaves are drying up and falling off, or if they look like they have numerous small dots (stippling). These pests are so small that you might need a magnifying glass to find them.

Spider mites usually infest your roses because of dry and dusty conditions. It's possible to try to control them by reducing the amount of dust and by making sure that your roses and other plants have enough water.

3. Fuller Rose Beetles

Fuller rose beetles spell big trouble as adults, when they like to chew on your rose bushes. You can usually tell they are there by the ragged edges on the roses' leaves and flowers.

The beetles usually feed at night, when they will chew away at the roses' flowers and leaves. During the day, fuller rose beetles hide on the leaves' undersides.

Pesticides typically are not effective in dealing with these persistent beetles. Your best method to get rid of them is picking them off by hand.

4. Thrips

Thrips have a particular fondness to white or light-colored roses. They damage the blooms by leaving brown streaks on the flowers and cause an immense amount of damage. Thrips are a very big problem when the rose bushes are planted close to each other; thrips move easily from one plant to another.

It can be hard to control thrips with pesticides because the pesticides are mainly effective when the insects are in their development phase and are very difficult to see. The best way to get rid of thrips is to clip and throw away the infected flowers.

5. Caterpillars

Some caterpillars love to make lunch and dinners out of rose leaves. Although the damage usually doesn't threaten the plant, the leaves can look unsightly. Remove the damaged leaves and prune any buds that are damaged.

6. Rose Slug

These insects are actually the larva of sawflies, but look like caterpillars because the rose slugs have legs. You can wash rose slugs off the bushes using a spray of water. One of their natural enemies also may keep them at bay.

7. Leafcutter Bees

These bees make holes in the rose bush leaves and take the leafy material back to their nests.

Although the leaves may not look nice, you really must put up with the bees. There's no effective way to keep leafcutter bees away from your roses. Bees also are good for the plants because they help with pollination.

8. Rose Curculios

These pests, which are about a quarter of an inch long, start dining as young as larvae on your rose buds as they develop. The rose curculios are particularly fond of yellow and white roses.

Rose curculios eat the buds by punching holes in the buds and blooming flowers. They kill the buds before the buds can even open. You can get ride of a rose curculio infestation by getting an insecticide from a local garden or home center.

9. Flat-headed borers

Flat-headed borers can make the canes of the rose die back, and can kill the canes and the entire plant.

To get rid of the insects, you'll need to remove any material that has an infestation. You can keep your rose bushes healthy by making sure they have enough water and not overpruning them during the summer.

10. Scale Insects

These pests get their names from the armored scales that they have. Scale insects also like to cause havoc with the cans on your rose bushes.

They may look like small gray ovals, and don't really move around but you can find them in the or back yard landscape. Because scale insects have no legs, they are there to stay. The best way to try to control them is to prune infected canes and put pesticide oil on any canes that you don't prune.