Hemlock ID help please.

I would like to collect several Mt Hemlocks for bonsai, but don't want to bring them home and have them struggle in this climate and then die. I live in zone 5-6 with low humidity sometimes and sometimes 100 F in summers. I can and will shade in summers when we have crazy high heat, have a good watering schedule, but I am a little concerned about the humidity getting as low as it does in the summer and fall. I could put a drip tray with water in it under the Hemlocks, but don't want to have to babysit them all the time. Baker City elevation is 3465'. Advice would be appreciated. Thanks!

WEATHER BY MONTH // WEATHER AVERAGES BAKER CITY​

JanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecember
Avg. Temperature °C (°F)-3.9 °C
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Min. Temperature °C (°F)-6.4 °C
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Max. Temperature °C (°F)-0.4 °C
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Precipitation / Rainfall mm (in)60
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Humidity(%)77%76%69%59%53%45%33%32%40%57%70%78%
Rainy days (d)9788642225710
avg. Sun hours (hours)5.06.28.210.011.612.713.512.410.78.26.24.5
The variation in the precipitation between the driest and wettest months is 63 mm | 2 inch. During the year, the average temperatures vary by 25.9 °C | 46.6 °F.
The month with the highest relative humidity is December (77.70 %). The month with the lowest relative humidity is August (32.23 %).
The month with the highest number of rainy days is December (13.03 days). The month with the lowest number of rainy days is August (2.33 days).
Baker City are in the northern hemisphere.
Summer starts here at the end of June and ends in September. There are the months of summer: June, July, August, September.





I have seen mt hemlocks growing in the north cascades in or near what you might consider eastern Washington. They experience dry spells in the summer and snowy winters. If Baker City has a similar climate it might be worth a shot trying to grow them there.
You could always try growing a small mt hemlock from the nursery to see how it does. Then decide whether or not to go for the yamadori.
 
Would hesitate to grow a Mt Hemlock in the Baker City area myself…they like the cool maritime air that brings moisture in the air on their needles…. Being in the dry side out there….

It might be wise to call a couple local nurseries and ask them if they have these trees in stock or have ever tried them…. If they don’t it wouldn’t be advisable putting a Mt Hemlock in the ground there, it might be wise to give this species a pass.

Here’s all you would ever want to know about Tsuga Mertensiana in an oldie but goodie research paper.

cheers
DSD sends
 
Mountain Hemlock grow well at Crater Lake. If possible to compare climate with yours this should tell if a good local possibility.
 
eastern hemlock have a distinctive vertical stripe on the underside of individual needles
 
Would hesitate to grow a Mt Hemlock in the Baker City area myself…they like the cool maritime air that brings moisture in the air on their needles…. Being in the dry side out there….

It might be wise to call a couple local nurseries and ask them if they have these trees in stock or have ever tried them…. If they don’t it wouldn’t be advisable putting a Mt Hemlock in the ground there, it might be wise to give this species a pass.

Here’s all you would ever want to know about Tsuga Mertensiana in an oldie but goodie research paper.

cheers
DSD sends
They grow over in the Bend, Or area that is similar to me here. I am going to try it and see what happens. I think I would use a drip tray with water in it at all times under any Hemlock that I have. The pot will be out of the water at all times of course. Does anyone have pictures of a small collected Mt Hemlock, or one in the wild that I could look at for reference? That would help a lot when I am searching. Any help appreciated! Thanks!
 
They prefer northern/eastern aspects and draws in south-western aspects (generally where it’s cooler/wetter.)
Once at an appropriate elevation, your first major clue will be cones. If mt hemlock are around you’ll see the cones on the ground and then some in nearby trees. Look closely at the needles of the trees with the cones. Crush a few and smell them. When viewed from the ends of the twigs they radiate in a star like pattern around the twig. Take a mental snap shot. They smell pickley or perhaps like dill.
Then look for those attributes on smaller nearby trees.

Unfortunately I don’t own any, but here’s a pic of the needle arrangement. I posted pics of the cones compared with western hemlock, earlier in the thread.
 

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Comparison…
 

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They grow over in the Bend, Or area that is similar to me here. I am going to try it and see what happens. I think I would use a drip tray with water in it at all times under any Hemlock that I have. The pot will be out of the water at all times of course. Does anyone have pictures of a small collected Mt Hemlock, or one in the wild that I could look at for reference? That would help a lot when I am searching. Any help appreciated! Thanks!
Some pictures of mt hemlock I took in Olympic national park…
Note that the foliage is mostly not two-ranked, the needles themselves are less flattened in profile, the undersides are less glaucous than in western hemlock, and that they curve slightly in the tips. There is also an over all more “bushy” appearance to the branching.
Some western hemlock will show some of these traits, especially at high elevation, but seldom show them all.
 

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