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A graceful conifer of the northeastern United States and Canada, northern white-cedar (Thuja occidentalis) is one of the least studied commercially important species in the region. However, forest land owners and managers in both countries have realized that regeneration and survival of white-cedar have become problematical and that ensuring that it continues to thrive is important to the ecology and economy of northern forests. The rot- and termite-resistant wood is used principally for products in contact with water and soil. Northern white-cedar has the lightest weight of any commercial wood in the United States. The heartwood is resistant to decay and subterranean termites, is easy to work, glues well, holds paint well, and has little dimensional change. However, the wood is soft and has low bending strength and nail-holding ability. Recent uses have been principally for rustic fencing, posts, mulch, and house shingles, especially along the seacoast. Other uses include cabin logs, lumber, poles, and specialty products; early Native Americans used it for canoe frames. In response to the need for information on northern white-cedar ecology, regeneration, and silviculture, Northern Research Station scientist Laura Kenefic joined with partners in the United States and Canada to seek answers. Their work synthesizes existing knowledge as well as new studies of regeneration, growth, mortality, site relationships, and responses to treatment. Their recommendations include retaining and releasing white-cedar in managed stands, and establishing and protecting advance regeneration and residual trees during harvesting.