How to Draw Trees - Conifer drawings by Claudia Nice
How to draw a tree, drawing tutorial of drawing a tree. -- I can draw branches just fine, it's the roots I have a weird problem with.
What magic there is in simple black and white. Three sketches from Drawing with Pen & Ink by Arthur L. Guptill, the first by the author, on trees, the second by Schell Lewis, and the third by Joseph Clement Coll: