Tiny green worms (caterpillars?)

johnsaunt(7)August 20, 2007

I just discovered some very tiny (3 mm long by 1 mm wide) green worms or caterpillars eating the leaves on my roses. The stems are completely defoliated and these little worms are often found curled up~resting for the next assault?

What are they? Will they turn into some beneficial butterfly or moth? If so, I'll gladly sacrifice some of my rose bush. But I suspect that they're nothing but trouble.

Thanks, Ginny

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michaelg(7a NC Mts)

They are likely to be sawfly larvae, known as rose slugs. The winged adult is a type of wasp.

    Bookmark   August 20, 2007 at 2:32PM
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the_morden_man((Z4-Z5) Ontario, Canada)

Sawfly larvae most likely. They will turn into an ugly tan and black, wasp looking flying pest and nuisance. Pick the bugs off and squash them gleefully.

If you look closely further down the cane of the rose, you will likely see a black section and lesion. This is where the larvae hatched from. The adult sawfly lay's eggs right into the tender new rose canes and these worms hatch from there and eat all the tender new growth and buds.

They are a nuisance here at this time of year.

    Bookmark   August 20, 2007 at 2:33PM
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