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gawlt

Curled leaves - is this a problem?

gawlt
14 years ago

Most of my roses have new leaves that are curled / gathered / warped looking. It appears as time goes on they flatten out. Is this normal?

I don't spray and have a minor amount of aphids. We have been hit with 2 weeks of cold, wet weather.

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Comments (9)

  • michaelg
    14 years ago

    It's not normal. Had any powdery mildew? It can cause waviness and curling, but I don't see any PM. Deformed new leaves along with death of growth tips can result from severe nutrient imbalance-- for example, calcium deficiency can cause hook-shaped leaves like the one at 3 o'clock in picture #2. Has this shoot lost its growth tip?

    I'm very familiar with the aftermath of aphids, and this does not look like that.

  • jerijen
    14 years ago

    No, I know every sort of powdery mildew damage, and this doesn't look like that.

    Rose Spring Dwarf Disease???

    Jeri

  • michaelg
    14 years ago

    Jeri, he said it was on most of the plants, and I don't think that could be the case with RSD, which as you know is a rather uncommon virus disease. I'm sure you must be right in ruling out mildew. It doesn't look quite like it to me either, the severe cupping and pleating.

  • buford
    14 years ago

    I get leaves like that sometimes when it is cold. Could just be stunted from the cold?

  • canadian_rose
    14 years ago

    I agree with Buford.

    My first thought was big deal :) I've seen that lots of times.

    IMHO it is from the cold.

    Carol :)

  • roseblush1
    14 years ago

    I agree with Carol. I have seen it show up on several roses, not all, and I just remove the leaf. I have a hunch it's some kind of insect that layed some eggs. Since the leaf is wrinkled, it can't do it's work of photosynthesis, so i just take it out. If it is a bug, the bug is gone, too.

    Smiles,
    Lyn

  • gawlt
    Original Author
    14 years ago

    Thanks all. I think it is either the cold snap we got or the aphid patrol by hand that I did when the leaves were very small.

    The bushes are doing fine otherwise so I'll leave nature be.

  • susan9santabarbara
    14 years ago

    I saw some of this type of damage on some roses about 3-4 weeks ago when we were in the throes of a major thrips invasion. I have seen this leaf damage in previous years as well. It was also cooler than average, which I think intensifies the damage from thrips b/c it takes longer for the blooms and new leaves to unfurl. Just a hypothesis! It's definitely not Rose Spring Dwarf Disease or Powdery Mildew on my plants. Thrips are a year-round presence for me nowadays, but there are definite peaks of their activity, and interestingly this coincided with major thrips damage on my blooms.

    Susan

  • htwfmol_hotmail_com
    12 years ago

    Mine are crinkling, on Etoile de Holland and some on Zephirine Drouhin.

    The weatherherehasbeen beautiful really - no cold snaps, nuthin.

    The leaves don't look mildewed.

    Still baffled.