Magnolia Kobus var Borealis

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canadianplant
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Magnolia Kobus var Borealis

Post by canadianplant »

Just ordered these seeds, since in pretty sure I killed my tripetala seedlings :(

The species M Borealis is said to get 25 feet tall, and is hardy to zone 4. This var is said to reach upwards of 75 feet over 50 years, and is hardy to zone 3 (roughly -38C). I think this is the best bet I have for trying magnolia here. IF the hardiness ratings are right, it should have no problem.

It is supposedly similar to M stellata, and stellata is sometimes treated as a var of kobus.

Anyone have any experience with the species or var in question?


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lucky1
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Post by lucky1 »

-38 C, wow.
Seeds from a local supplier, Jesse?

Gorgeous tree:

http://www.hortusformosus.nl/Plant14.htm

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canadianplant
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Post by canadianplant »

Nope. I ordered them from bc. Afaik no one here is growing any magnolia. I wish i had local mag seeds. Maybe i cAn start
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Paul Ont
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Post by Paul Ont »

jesse- Methinks this variety will be tough enough for zone 3. I don't think that the var. borealis is taxonomically valid (i.e. no stable distinguishing features) but it is horticulturally useful! Good luck!
canadianplant
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Post by canadianplant »

Well, there definitely isnt too much to go on when you google. No pseudonyms that I can find either. The place I ordered from says its a "subspecies of M. kobus", and lists it the same as I titled this thread.

The only real information I can find is that it gets larger then the species and is supposedly hardier, what ever the proper name is.
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Andriy
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Post by Andriy »

It is a variety, not subspecies. In fact, var.borealis is just plain Magnolia kobus. You will not see the difference.
It needs light acid soil, semi-shade and moisture.

Good luck with your magnolias!
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marceli
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Post by marceli »

Magnolia hardy to -38C ? Never heard of such plant :shock:
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canadianplant
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Post by canadianplant »

andryi - Most of what ive read places it as a variety, but as paul said, there is some argument as to the validity of the name.

The things that do in fact seem to stay consitant, is that borialis gets larger then kobus, and is a bit hardier. Most sources state hardy to at least -35C. Stellata has the same general hardiness rating does it not? Kobus is hardy to at least -30C from what i have seen
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Andriy
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Post by Andriy »

marceli wrote:Magnolia hardy to -38C ? Never heard of such plant :shock:
Moreover, there are magnolias hardy to -40-45C.

The hardiest of all magnolias are Magnolia tripetala (Umbrella magnolia), Magnolia acuminata, Magnolia sieboldii, and Magnolia kobus (also M.kobus var.stellata and M.kobus var.loebneri).

M.kobus will survive well below -30C.
canadianplant
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Post by canadianplant »

I also have tripitala seedings.... Outside, unprotected in cups......
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marceli
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Post by marceli »

Andriy wrote:The hardiest of all magnolias are Magnolia tripetala (Umbrella magnolia), Magnolia acuminata, Magnolia sieboldii, and Magnolia kobus (also M.kobus var.stellata and M.kobus var.loebneri).

M.kobus will survive well below -30C.
I'm taking notes 8)
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Paul Ont
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Post by Paul Ont »

Seedlings will be much less hardy.
canadianplant
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Post by canadianplant »

Paul Ont wrote:Seedlings will be much less hardy.
Yup.... especially in dixie cups....

I will say my maple, pear and apricot seedlings made it in pots last winter....
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