This is and Red Knock Out Rose Bush and is one of three bushes in a raised bed filled with mulch.

All three plant s have these holes in the leaves and not sure how to treat or prevent.
Any ideas?
Thank you
Theresa M. Campbell, LPN
  5 answers
  • Douglas Hunt Douglas Hunt on Jul 12, 2013
    I am suspecting some type of caterpillar, Theresa. I would try a course of Bt, Bacillus thuringiensis.

  • Lela Lela on Jul 12, 2013
    this website might be helpful ( i use the blue Dawn original instead of Ivory ) Good Luck and Happy Gardening !

  • Janice Presecky Janice Presecky on Jul 19, 2013
    I have knock ou roses an they are beautiful you have to get Bag-A-Bug the Beatles are eating Them you get this at Home Depot & hang it near by on a tree or something g. & the Bugs go for this sweet thing inside the bag it is great

  • Therese C Therese C on Jul 22, 2013
    My mother uses Rose Dust to keep insects off of her rose bushes. It has always worked very well. It is a basic Bonide Product and can be found at nurseries as well as hardware stores and I believe Wal-Mart also carries it. The cost is usually around $8. If you are unsure of the kind of bug eating the leaves they do sell one called Bonide 8 Insect Control, it is a bout $15.