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  • Results 1 to 4 of 4

    Thread: Canna in water during winter?

    1. #1
      Paul Sabucchi is offline Senior Member
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      Canna in water during winter?

      Just put in the pond my first two Canna lillies (Ra and Wyoming) and thinking of getting more. As I am thinking of getting more I would like to know if I can leave them in the pond even during winter, considering the pond will be covered and water does not go below 45f. I have seen the post about leaving canna in soil over winter, but what about water? Would they rot?
      46000 liters with only wetland filtration

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    2. #2
      One Poet's Garden's Avatar
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      Quote Originally Posted by Paul Sabucchi View Post
      Would they rot?
      Probably not. I'm going to try it this winter in an open pond in a much colder climate than yours. If they're in your bog filter, with moving water, and under cover, your odds are quite good.

      But, knowing cannas as I do - I grow mine from seed every year - there may be an unexpected problem. You may need to find a way to trim them back under the cover. They can grow to a couple meters tall, and in my greenhouse at least, they keep growing all winter. Long handled pruning shears would likely do the trick. I think I'd keep a pole saw handy just in case!

      Best,

      Bill

    3. #3
      CraigP's Avatar
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      I would suggest you dig and protect them for winter. While Canna sp. are hydrophytes, they are not 'aquatics' and the rhizomes subject to rot when kept in cold, flooded conditions. Canna flaccida is native to my area and while it does grow well in seasonally flooded ( but not submerged ) conditions, winter is the dry season and when it is cold/cool the ground never freezes and the rhizomes are in conditions too dry to promote rot.
      Truth is not what you want it to be; it is what it is. And you must bend to its power or live a lie.”― Miyamoto Musashi

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      Craig

    4. #4
      Paul Sabucchi is offline Senior Member
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      Thanks Bill & Craig for the advice, I probably will pull most of them out and leave just one or two easy to reach (and prune) ones in next winter to see how they go
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