frost bitten canna's

noway(9FL)January 28, 2011

I live in the Tampa FL. We had some frost and a few freezing mornings the past month, and the leaves on the canna's are brown around the edges. They were partially protected, so they didn't die off completely. I would like to know if I should take a scissor and cut the brown parts off the edges of the leaves. They look so ugly the way they are.

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livsauntieshel(6b/7a south PA)

don't cut off the brown parts, you'll leave huge areas exposed to the elements, any kind of bugs or disease. If they're really bad, you could just cut the whole leaf off. Or, if you're willing to, cut them off at the ground and let them regrow all new foliage...that's probably the best idea because the leaves won't recover from frost damage, cell structure collapsed and whatnot. It was minus 7 here on Monday...

    Bookmark   January 29, 2011 at 12:02PM
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sgyn(Cambridge 5)

I have found that browned leaves caused by frost are generally of no usefulness in plant growth and may inhibit
new leaf growth and the production of pups underground.
In Canada I have found that leaving Cannas into the first
week of November with leaf browning does not negatively
affect rhizome growth, BUT this does differ from one canna
variant to another. The indica group seems more resilient
but I find the more stolon/rhizome hybridized types suffer more from frost. Hope this information was helpful.

    Bookmark   June 4, 2011 at 4:24PM
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