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barbkchicago

hardiest hibiscus syriacus???

barbkchicago
18 years ago

I am in the Chicago suburbs and I swear we are mis-zoned here (we are really zone 4 here). Anyway I have 4 Diana's and one Aphrodite and they all came back beautifully this year, later than other shrubs as usual, but that's okay. I just put in a Helene today in place of one that didn't come back. I AM TRYING TO FIND THE MOST COLD-HARDY HIBISCUS SYRIACUS FOR THE NORTHERN CLIMATES. Going on one grower site after another tells one nothing. I understand diploids are more cold hardy than triploids, but that's one grower's comment. Is anyone in northern climates (zone 4, etc) growing these and with which varieties are you having the most luck. Thanks in advance

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