Tree Forestry can depict fifty different species of trees. Moreover, each paint set includes a coordinated assortment of trunk, branch and defect patterns that are engineered to work together seamlessly. Goodies like custom brushes and flat patterns let you edit form or quickly skin 3D tree, trunk or limb models.
Try it out for yourself. Complete this tutorial using Forestry and Jungle 3D. Tree Forestry is $49.95