Micro-Mark グリーンポリファイバー、12オンス

Stretching this poly fiber out really lets you control the density, so you can go from a thick canopy to a sparse winter look with the same bag. The green shade looks natural enough that I didn't feel the need to paint over it, which saved me time.

This bag goes a long way once you learn to pull it thin — I covered four decent-sized trees and still had plenty left. The green is nicely muted, not that fake neon look, and the density control makes it easy to blend into the scenery.

Stretching it out gives you exactly the density you need for a tree canopy, and the green looks natural even under bright lights. A little goes a long way, so the 12 oz bag will last through several projects.