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ndd18

Who are these bugs / flies

7 years ago

Hello,

Recently, I moved into a new house and planted my small collection of roses in the yard. Most of my rose leaves are eaten by certain bugs, whom I am not familiar with. These bugs are all over my rose bushes and I am one of those who don't like to spray.


Can anyone identify these bugs?


Comments (12)

  • 7 years ago

    First photo - not sure, looks like a common type of fly

    Second photo - looks like crane flies

    Third photo looks like the work of leaf cutter bees.

    All pretty harmless to roses.

    Dylan Z8bTX thanked HalloBlondie (zone5a) Ontario, Canada
  • 7 years ago

    Thanks Blondie, I am relieved to hear that they are good guys :) My Twilight Zone is covered with those little greenish flies. I thought the orange color flies are the ones who are cutting all leaves. Does anyone else have any other suggestions?

  • 7 years ago

    Third photo is leaf cutter bees. I’m with HalloBlondie on all three.

    Dylan Z8bTX thanked Patty W. zone 5a Illinois
  • 7 years ago

    Thanks Patty, Yes, I saw one bee cutting leaves of my "Granada" today! They are little black bees. I've decided that I learn to live with them. They are harmless and beneficial insects:)

  • 7 years ago

    However they do have a somewhat annoying habit of laying their babies inside the canes of many broadleaf plants. Roses are one of many such plants. While they say it doesn’t cause much damage. It does cause my canes to perish over winter the same as a cane borer does.https://extension.colostate.edu/docs/pubs/insect/05576.pdf

    There is a small forested area behind my house. One would think this would be enough for the little buggers. But noooo

    I watched one two years ago cutting the leaves of a phlox. It would then fly down into the plant. Curiosity got the better of me (sorry little bee). I watched to see which canes it was going to. I cut the cane then split it open lengthwise. There were many baby chambers. Oh well it is what it is.

    Dylan Z8bTX thanked Patty W. zone 5a Illinois
  • 7 years ago

    Oh no Patty! I dont know what to do now. They damaged almost my whole Granada bush and have moved to another rose bush. Do you think spraying milk will stop them. I’ve tried Neem oil without any success:(

  • 7 years ago


    This is how my Granada looks now :(

  • 7 years ago

    Thank you for that info suncoatflowers.

  • 7 years ago

    Leaf-cutter bees are also super-pollinators; my roses seem just fine with the donation (with yes, fewer perfect leaves, but they keep growing more) and I’m all for helping these little guys out as much as I can.

    So I’m happy when I see they’ve selected my roses to make bee baby blankets out of. :-)

    Dylan Z8bTX thanked Perma n’ Posies/9A FL
  • 7 years ago

    HI Dylan, one thing that I’m seeing is the crown of your plant. I’m assuming that it is grafted and may not have been planted deep enough. However it was so cold here this winter that I lost two own root roses and they were buried under ground.

    The leaf-cutter bees will use the leaves but it really doesn’t effect growth. It’s not growing much so they keep using the same leaves. The little bees use canes quite often here for their babies. Perhaps because our winters kill so much of the canes that each spring there is a lot of perfect new growth for them to use. When I prune to early they are often still inside.

    Dylan Z8bTX thanked Patty W. zone 5a Illinois
  • 7 years ago


    Hi Patty, yes, this plant is grafted. I have circled the crown area. Do you think it should be buried completely? I was under the impression that the crown area should be out.