Magnolia Kobus var Borealis

canadianplant · Post by **canadianplant** » Thu Nov 29, 2012 8:31 am

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?

lucky1 · Post by **lucky1** » Thu Nov 29, 2012 9:23 am

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

Gorgeous tree:

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

Barb

canadianplant · Post by **canadianplant** » Thu Nov 29, 2012 1:10 pm

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

Paul Ont · Post by **Paul Ont** » Fri Nov 30, 2012 8:47 am

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 · Post by **canadianplant** » Fri Nov 30, 2012 1:12 pm

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.

Andriy · Post by **Andriy** » Fri Dec 14, 2012 8:40 am

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!

marceli · Post by **marceli** » Fri Dec 14, 2012 11:48 pm

Magnolia hardy to -38C ? Never heard of such plant

canadianplant · Post by **canadianplant** » Sat Dec 15, 2012 6:44 am

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

Andriy · Post by **Andriy** » Thu Dec 20, 2012 10:30 am

marceli wrote:Magnolia hardy to -38C ? Never heard of such plant

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 · Post by **canadianplant** » Thu Dec 20, 2012 12:51 pm

I also have tripitala seedings.... Outside, unprotected in cups......

marceli · Post by **marceli** » Thu Dec 20, 2012 10:44 pm

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

Paul Ont · Post by **Paul Ont** » Fri Dec 21, 2012 4:33 am

Seedlings will be much less hardy.

canadianplant · Post by **canadianplant** » Fri Dec 21, 2012 8:09 am

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....

PalmsNorth.com

Magnolia Kobus var Borealis

Magnolia Kobus var Borealis

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