Rosebud
Oxford
Posts: 35
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| Posted: Thu Jul 02, 2009 3:46 pm Post subject: Cannas |
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My cannas leaves are not opening.I forced on open and there was something like it was sticky and had black stuff in it, well it's hard to describe really.It is really getting a hold and I have lots of them.What can I do?
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eileen
 Forum Moderator
Scotland
Posts: 18013
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| Posted: Thu Jul 02, 2009 6:01 pm Post subject: |
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Any chance of a photograph Rosebud as it would help us to ID what could be wrong with your cannas?
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Rosebud
Oxford
Posts: 35
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| Posted: Thu Jul 02, 2009 6:25 pm Post subject: cannas |
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no I don't but I will get photos this week end and post them next week.Thank you
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eileen
Forum Moderator
Scotland
Posts: 18013
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| Posted: Thu Jul 02, 2009 7:36 pm Post subject: |
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Thanks Rosebud the piccies will help us quite a bit. I've tried 'googling' but haven't come up with anything yet for you I'm afraid.
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toni
Administrator
Plants Moderator
Regular Plants Contributor
North Texas, Zone 8a
Posts: 11249
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| Posted: Thu Jul 02, 2009 11:09 pm Post subject: |
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You may have Canna Leaf Roller, it is the caterpillar of the Geshna cannalis moth. There is also another one Calpodes ethlius that has come up from Mexiso.
I had several leaves affected last year and cut the affected leaves off at ground level, that seems to have taken care of them. Over the early winter I moved all of those Cannas to another bed and none have a problem this year.
This fall when the leaves die, cut them down to the ground and throw them away, not in a compost pile. That will take care of any overwintering larvae
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