When I originally built this module I attached the Woodland Scenics TR1106 trees direct to the scenery base by drilling a ¼" hole in the Paper Mache then filling the hole with glue. That was a terrible mistake, the glue held so good that removing them tore up the trees and scenery very bad. I had thought that after the trees were attached I would never need to remove them. Well over time they deteriorated badly. After learning the hard way I now use the base that comes with the trees and cover them with flocking. There was over 50 trees on this module that needed removing during the remodel and I dinged the Paper Mache/flocking pretty bad removing them. The Woodland Scenics tree base has a tight fit 1/8" hole for the stud on the bottom of the tree trunk.
I tossed all of the toy like tree bases for the existing trees during the original construction so I have improvised. Plastruct ¼" Styrene tubing works very good as a mount. I cut the tubing into ½" lengths and glue them in a ¼" hole to hold the trees. The ¼" Plastruct also works for my power/telephone poles. The pictures above and below shows how the improvised tubing works very well to hold the trees and poles.
More as work progresses.