I am looking for a conifer to place in front of my house, that must have the following characteristics :
height at adult age between 2 and max 6 meter height (no known specimen may be higher than 6 meter)
upright habit, not dwarf
the thinner, the better
color : green or blue-green, but not fully blue or yellow (aurea)

To date, I only found "abies koreana" or "abies koreana silberlocke" meeting these criteria.

Do anybody have some suggestions for me ?

I personnally appreciate very much the habit of "Tsuga Mertensiana", but the native species is to high. Do anybody know if there is a cultivar thin and not exceeding 6 meter ?

Thank you very much,

Didier

What you are asking for is not possible.

Nothing I am aware of especially upright specimen species will grow to 6m (20 ft.) and stop growing.

In other words they grow till they die.

Abies koreana and 'Silberlock' a slow growing cultivar can top 20 ft.

'Silberlock' can be pruned to stabilize growth only for a time.

Dave

See link.