Tamarack is a mid-sized, slender tree with short, soft, needle-like leaves. Tamarack needles turn yellow in the fall and drop off in winter. In spring the new growth is a beautiful bright green. Tamarack grow primarily in acid, nutrient poor wetland sites but will also grow in sunny upland sites. They are completely intolerant of shade. Their wood is rot resistent. Tamarack provide nesting sites for the American Osprey and the Great Grey Owl.