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  • From: mIEKAL aND <>
  • To: nafex mailing list at ibiblio <>
  • Subject: Re: [nafex] Zone 3 Japanese Maple
  • Date: Fri, 27 Apr 2012 11:11:40 -0500

Steve, thanks for this excellent post. Im wondering if I can get them
to fly in the new tropics of southwest WI.. I'd say on top of these
ridges it seems we are clearly zone 5 the last 15 years or so..


On Fri, Apr 27, 2012 at 10:19 AM, loneroc <> wrote:
> Hi Jim,
> "Japanese maple" generally refers to two species Acer palmatum and Acer
> japonicum.       There are no commercial cultivars of either that are fully
> hardy in climates colder than zone 5.  Betty Addison of the former Rice
> Creek Gardens in the Twin Cities, Minnesota (zone 4a) and Ed Hasselkus,
> retired curator of the University of Wisconsin Arboretum in Madison (zone
> 4b-5a) both found that some seedlings of Acer japonicum atropurpureum could
> sometimes survive in very sheltered locations but had regular winter
> damage.  Ed also told me that the clone Emperor II (I forget which of the
> two species it is) had also survived for a number of years for him although
> I couldn't find it when I looked this spring.  If you really have a zone 3
> hardy clone of either species it's an important find and you should make an
> effort to get material to an Acer specialist nursery.
> In my zone 3 garden I grow a similar related species from Korea, Acer
> pseudosieboldianum, a lovely addition to my garden.  You might also want to
> key out that species to determine exactly which one you have.  Acer
> pseudosieboldianunum has few or no cultivars although I have a dwarf
> seedling that I'm watching closely.  I won't be tapping it any time soon
> obviously.
> If you post pictures that show as many details as you can I can pass them
> along to Dr.Hasselkus--I'm sure he'd be very excited to see your find.
> Steve Herje, Lone Rock, WI USA.  USDA zone 3b (but with good summer heat)
> Sent from my U.S. Cellular® Android phone
> Jim Fruth <> wrote:
>>    I know where there is one with a 6" diameter bole (at 3') so it had to
>>have withstood alot of cold weather.
>>Jim Fruth
>>Brambleberry Fruit Farm
>>4002 Davis Street
>>Pequot Lakes, MN  56472
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