Macropylla, according to all I found on the web not reliably hardy in my area. My hubby bought me one last year which spent the long frigid for Ohio winter in the partially heated basement. It spent the warm weather outdoors in a pot, seemed happy and grew and looked beautiful despite the chipmunk that insisted on digging in many of the pots. It was outside for some cooler nights including a couple frosts. The local rabbit found it and bit one branch off and another looks dead. Leaves turned all brown and sick looking which I believe was because of the cold. It has since been brought inside for the winter. I'm wondering if it should be set back out in a more protected area to get some more chill time in hopes of forming buds for next spring.
And hubby bought me another one a month ago. The flower is now mostly faded and it needs to be repotted. I guess I'll get around to it sooner or later.
They are very pretty but I'm not sure I'll be able to coax them into flowering again. Has anyone else every kept them in pots and got them to flower again?