Distance and perspective can be difficult to pull off in a group planting... I find it interesting that the feedback on the group I posted was only from the tree counters...not one direct mention of perspective or distance....although the original poster did mention the "drastic size difference"
This planting was never intended as a typical group (a number of trees planted together to represent a forest, or forest's edge) it was an experiment in perspective. Thus, I never applied the "rules" for creating forest plantings...in my mind they did not apply.
I am attempting to create an image that might reflect the way Cypress trees look when in a canoe and you look out across an open lake spotted with a few ancient flat-top Cypress. I really like how the trees and the plane of the water surface interact. In my mind the largest tree is by itself...a little further in the distance is the group of 2 and much further away is the smallest tree. I even considered trying to plant this group so that it would be viewed length-wise or from the side of the container...thinking I could achieve more physical distance and thus more imagined distance and perspective between the trees and may still do that in the future.
Admittedly there is much more work to be done before I am pleased with the composition (its only been together 6 months and the trees collected a year before that). Stick around and take a gander in 5 years lets see if it has improved
Al you are exactly right about the pot...obtaining an appropriate container is going to be a challenge and expensive.
G3ON5IA_GUY, the appropriate sized container is very important but it depends much on your vision for the planting you create. I hope you will share when you are ready. Here is a pic of Vaughan Banting with a BC forest planting that he and his crew created in the early 90's that I suspect may be similar to what you are envisioning.
did they use an even number of trees???