Coniferous swamps are forested wetlands in which the dominant trees are lowland conifers such as northern white cedar (Thuja occidentalis). The soil in these swamp areas is typically saturated for most of the growing season and is occasionally inundated by seasonal storms or by winter snow melt.

Coniferous Bogs have a similar ground layer of sphagnum mosses and sedges, but has the addition of mature tamarack and black spruce trees. Coniferous bogs can be home to spruce grouse, gray jays and other species of the boreal forests.