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  Zantedeschia hardiness
From: Steve Marak samarak at gizmoworks.com> on 2005.03.05 at 16:05:53(12768)
Similar story here, Bonaventure. (NW Arkansas, solid USDA zone 6, little snow
cover, wildly fluctuating temps rarely down to -20 F [-29 C] in winter.)
Except that for me, they're all hardy except the one that should be, Z.
aethiopica, the big white one.

I've had a couple of varieties out for more than 10 years now, and several
generations of their children as well. Others just a year or two, but so far
seem equally happy. At this point, except for aethiopica, which just isn't
going to grow outdoors for me, I toss them in the ground and am very confident
that they'll show up next year, regardless of their parentage.

Steve

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From: aroid-l at gizmoworks.com on 2005.03.06 at 18:20:33(12774)
-20F! Yikes!! We are feel stressed to the limit here when temps go down to 0F and the wind chill feels like -20. Nearly killed wrapped up Musella lasiocarpa and Cortaderia. But Gladiolus also survive here, the big florist types. I figured I'd "dig their graves", 2 spade-depths down into the sandy subsoil, & they loved it. I'm tempted to try it on some of the more tender Arisaemas and get my paeoniifolius down there, albeit with a plastic dropsheet winter wetness protector.
Bonaventure

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