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Tropical hibiscus: how cold is too cold?

Posted by linnea56 z5 IL (My Page) on
Tue, Oct 7, 08 at 19:26

I have a growing number of tropical hibiscus plants that I will be bringing inside for the winter. How cold tolerant are they? I will watch for frost warnings, of course, but is there a temperature in the low 40s (or wherever) to which they should not be exposed? A cut-off point? They are blooming a lot and I hate to suddenly reduce the light they are getting while blooming.
Thanks!


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RE: Tropical hibiscus: how cold is too cold?

It depends on how you're going to overwinter them. If you want them to continue blooming, then around 40 will be the cutoff.
I don't care if mine go dormant, so I wait until it gets around freezing.
Barb


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