OK, set the tile you want very sparse trees to clutter shape that has the small bushes, Now trees can be placed just like an airfield. The trees, rocks even the snow men have their very own object shape number and can be placed any where you want them. I think "delicious trees" are object number cg0005 I could be wrong, i'm at work and not on my gaming computer. But the trees or ANY object thats in AH can be individually placed. when you go into the objects window the tree shape number is in the left hand side window look for the tree you want and place it to terrain alt. Now if you want a more dense tree look use the tree clutter for that tile and add more individually, but beware it is time consuming and there is a 10,000 object limit. I think if you place a tree individually by the object window that counts as 1 object, If you use the same tree as a clutter in the tile it doesn't add to the 10,000 object limit..... I Think..... HiTech could give the correct answer.
NUTTZ