Dressing Up Your Tree Bases

The Wargames Table site has a tutorial on dressing up your tree bases

Making Trees Cheaply

Mitch’s Wargaming blog has a tutorial on making cheap trees for your wargaming table. It looks like a lot of work, but if you have more time than money …

Working With Tree Armatures

Here’s a good tutorial on working with tree armatures.

Modeling Tree Bases

The Joy and Forgetfullness Blog has a useful post on modeling good looking tree bases.