Ingeborg, it's 'Horstmann's Silberlocke' and 'Vanderwolf's Pyramid'...
This is my help for you ;0)

Oops on the spelling of Vanderwolf's Pyramid but I was just going by the name listed for the Horstmann's Silberlocke. I can only put down what is given to me. You need to write to these distributors and make sure they do it right. That way we don't keep getting scolded for making a mistake we did not know was a mistake. :)

'Silberlocke' is a more or less upright, narrow tree. It seems to grow annually only a couple of inches horizontally, while growing up to six or eight inches vertically.
Here is a picture for you
{{gwi:607865}}

-Sam

i THINK its very borderline.. the further south you go .. night temps.. if i am not mistaken.. no recollection if i ever knew where you are ...

i have no problem in z5 MI .. i am not sure dave in z5 KC ... can say the same thing ... it MIGHT be a nightime temp issue ... or night humidity ...

its hard on my monkeys pic.. but zero in on the leader.. it should look just about what he said.. 8 inches ... but if you look at the trunk.. you can see the yearly whorls.. all in the ballpark ....

silver show is a look alike in my mind ...

historically it has been suggested that it was thought to have come true from seed .. so what is the original.. might be questionable ... [probably for anyone other than joy.. lol]

ken

ps: i would guess that monkeys tree is about 8 years old.. am i close????

Ingeborg - I have two of them and I cannot speak to zone hardiness or growth rate where you are, but I do want to highlight the loveliness of the cones. They are the most amazing lavender in spring, with green accents. For what it is worth, mine have been quite slow here in zone 9 and I am about to consign my 'Vanderwolf's Pyramid' to the wide open spaces near our barns, due to what I have read here about growth rate and eventual size. Keep us posted!

Here is a link that might be useful: Abies koreana 'Horstmann's Silberlocke' cones

Ken, I would estimate that this tree is closer to ten or twelve years of age... unless it was much more slowly-growing in its earlier years.

The tree is around 6 or 7 feet tall right now.

Also, I need to add that well-draining soil is key for successful growth... as with many conifers.

-Sam

Damnit Sam, why don't you use the correctly written cultivar which I just mentioned as the first answer to this topic?
Also for you it's 'Horstmann's Silberlocke'!

Sorry I let ya down, Joy. I was just renaming it as the original poster had written it.. You can rest assured that it is correct in my databases.

-Sam