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Re: Hibiscus question

Angela wrote...
>
>>This week I bought a potted hibiscus.  The lady in the store told me that I
>>could put it outside in the spring(in a patio pot) and it would thrive all
>>summer, bringing it back inside before the first frost.  Once home, I
>>researched a bit more and found that hibiscus can be hardy to -28 degrees C,
>>which would make it hardy enough to stay out all winter. (Ontario, Canada,
>>Zone5)  How do I tell if my hibiscus is the "winter outdoors" type?  Has
>>anyone left theirs out in these conditions?
AND ALSO........>>>
> the temp was actually minus 28 deg C, but I've heard from another
subscriber that, that type is a herb perennial, not the shrub type that I
have.  He also said that they(the hardy type) are a close resemblance to a
hollyhock, not the hibiscus.
>
The Hibiscus usually sold in England as a pot plant is the evergreen
Hibiscus rosa- sinensis which is not hardy and should be overwintered at
45f-50f min., according to Reader's Digest Encyclopedia of Garden Plants.I
think it's likely this is what you have, Angela.
The most common hardy Hibiscus in this part of the world is Hibiscus
syriacus which is deciduous and shrubby.
I have grown H. militaris,H. coccineus and H. moscheotus from seed last year
and although some books give these as shrubs they are behaving as herbaceous
perennials with me, even in my frost free-conservatory...can anyone tell me
how they usually grow?
Jane
(Ireland)
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