Thuja occidentalis (northern white cedar) is native to northeastern North America. These coniferous trees can live up to 150 years. They are commonly used as ornamental trees along hedgerows. Northern white cedars are related to western red cedars but only grow 15m tall- 4 times smaller than red cedars. 

 

T. occidentalis are found in locations that faster- growing pioneer species can not tolerate. Their most common habitat is boreal forest swamps. Although T. occidentalis can tolerate variable conditions, specialized environmental habitats are needed to promote seedling establishment. Northern white cedars require a constant moisture supply to germinate. Decaying wood from downed dead trees retains moisture in its porous tissues. This provides T. occidentalis with an ideal seed bed. Scientists study how different forest management practices affect northern white cedar populations. When forests are managed unsustainably- and downed woody debris is removed- less moisture storing material remains for successful germination.

 

Thuja ocidentalis dominate boreal swamps and areas with high moisture content. Orchids are an important specialized species, whose presence indicates good forest health and an abundance of important pollinators. Orchids dominant habitats like cedar fens and swamps, which necessitates conservation and longevity of northern white cedar swamp stands. Northern white cedar is also an important food source for white tailed deer, especially in winter when resources are scarce.