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Holes in rose leaves #837492

Asked June 25, 2023, 8:28 PM EDT

Myfriends's rose bush has holes in the leaves. I can not find any pests on the plant. The blooms are intact. No problems/pests on any other plants in the yard. Could this still be rose chafer when the blooms are still intact?

Otter Tail County Minnesota

Expert Response

Good morning Christina and thank you for reaching out to ask2.extension.

The rose chafer adult usually attacks the flowers as well where as the larvae is usually a root eater.  This could also be JapaneseBeetle damage.  There is also a sawfly that eats roses as well a leaf cutting bee.  There are lots of things that attack roses.  Without finding the insect it’s hard to be sure.

She should do something to stop them.  If you use a chemical or powder be sure to read label and follow instructions.  Be sure to read if product is dangerous to pollinators.

You can try things that are not insecticides.

Mix one tablespoon of vinegar with one cup of water. Add one and a half tablespoons of baking soda plus one tablespoon of dish soap and one tablespoon of vegetable oil (or any other cooking oil). Stir this mixture into one gallon of water, and spray it on your roses' foliage.

There’s a ton of information in the different insects on the Clemson University website.  If interested go to hgic.clemson.edu and search for

Deb Kroon Replied June 26, 2023, 11:35 AM EDT

Good morning Christina and thank you for reaching out to ask2.extension.

The rose chafer adult usually attacks the flowers as well where as the larvae is usually a root eater.  This could also be JapaneseBeetle damage.  There is also a sawfly that eats roses as well a leaf cutting bee.  There are lots of things that attack roses.  Without finding the insect it’s hard to be sure.

She should do something to stop them.  If you use a chemical or powder be sure to read label and follow instructions.  Be sure to read if product is dangerous to pollinators.

You can try things that are not insecticides.

Mix one tablespoon of vinegar with one cup of water. Add one and a half tablespoons of baking soda plus one tablespoon of dish soap and one tablespoon of vegetable oil (or any other cooking oil). Stir this mixture into one gallon of water, and spray it on your roses' foliage.

There’s a ton of information in the different insects on the Clemson University website.  If interested go to hgic.clemson.edu and search for rose insects and related pests fact sheet.  It will also give you what will kill the insects.  Again be careful of the pollinators.

Also in the first picture she has a weed with heart shaped leaves.  That little vine will grow and almost chock out the rose.  She should get rid of that.

Good luck!

Deb Kroon Replied June 26, 2023, 11:37 AM EDT

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