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Northern plant trials, data gleaned from 100+ year arboretum at 60 degrees north latitude in Finland

 
Posts: 189
Location: Kachemak Bay, Alaska (usda zone 6, ahs heat zone 1, lat 59 N, coastal, koppen Dfc)
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I just found this website  http://www.mustila.fi/en/plants
The site is northeast of Helsinki, of note, hazelnuts thrive there, as do some walnuts.
 
Corey Schmidt
Posts: 189
Location: Kachemak Bay, Alaska (usda zone 6, ahs heat zone 1, lat 59 N, coastal, koppen Dfc)
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Also I would love to have links to any other arboreta or botanical gardens north of 55 degrees with detailed info on what has succeeded and what not.
 
Posts: 48
Location: South/Southwestern Finland
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Mustila is the most well known arboretum here in Finland, they do know their stuff there! And the seeds they sell are from known sources, most of the time from the arboretum itself. We just this autumn went to Belarus and collected some of the most winter hardy Juglans regia there is to be trial tested in Mustila.
 
pollinator
Posts: 2409
Location: Massachusetts, Zone:6/7, AHS:4, Rainfall:48in even Soil:SandyLoam pH6 Flat
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The arboretum is listed as between zone 5 and zone 4, so while cold it is not excessively cold. Like coastal British Colombia it get a maritime buffer effect.

http://www.nuttrees.com/edible-nut-trees/other-edible-nut-trees
This Canadian Nursery has quite a few Walnuts, Pecan, Heartnut, Hickory and Chestnut that is rated for zone 4 and Hazelnut that is rated for zone 2. So there is quite a few options available for folks on this side of the pond. But I am supper happy that folks on the other side of the pond have resources available to them.
 
steward
Posts: 5045
Location: Northern WI (zone 4)
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If anyone has ordered from these sources, please consider doing a review of them for the Plant and Seed Source Review Grid.  There's a staff note at the bottom of the grid with a link to directions.
 
pioneer
Posts: 1158
Location: 4b
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S Bengi wrote:The arboretum is listed as between zone 5 and zone 4, so while cold it is not excessively cold. Like coastal British Colombia it get a maritime buffer effect.



I consider that excessively cold.  I'm in 4b, and that is supposed to be -20F to -25F, but we occasionally get -30F or colder.  Personally, I think that is pretty darned cold.
 
Mike Jay Haasl
steward
Posts: 5045
Location: Northern WI (zone 4)
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Excessively cold is all relative.  I think the point is that for 60 degrees North, it's quite cold but not not nearly as cold the border between the Northwest Territories and Saskatchewan which is at that same latitude.  Anchorage AK is farther north yet and they still are around a 4b.  But 200 miles East (and further inland) it's about a 2a to 1a.
 
S Bengi
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Location: Massachusetts, Zone:6/7, AHS:4, Rainfall:48in even Soil:SandyLoam pH6 Flat
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Trace Oswald wrote:I consider that excessively cold.  I'm in 4b, and that is supposed to be -20F to -25F, but we occasionally get -30F or colder.  Personally, I think that is pretty darned cold.



Trace I am with you. I grew up in the Tropics. I remember shivering on foggy mornings when it got into the 70F. Yes I was that that guy who calls Miami, FL in the winter cold. But living in New England, my views of cold have changed.
 
S Bengi
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We have to consider quite a few things.
Winter coldness aka USDA zone 4b.  
And then probably even more important is growing degree day. When it comes to actually getting an harvest. Both for annuals and for regular food forest.

 
S Bengi
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Location: Massachusetts, Zone:6/7, AHS:4, Rainfall:48in even Soil:SandyLoam pH6 Flat
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The link you provided doesn't seem to be using the same zone system as usa unfortunately.
Can you check the temp for FI zone 7 compared to US zone 7


 
Can you really tell me that we aren't dealing with suspicious baked goods? And then there is this tiny ad:
Food Forest Card Game - Game Forum
https://permies.com/t/61704/Food-Forest-Card-Game-Game
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