| Boreal bog forests are found in northern areas that were covered by glaciers during the last ice age. They began to form about 18,000 years ago, when the ice sheets started to retreat. The glaciers left behind many hollows and depressions, some of which filled with water and formed lakes, some of which filled with sediment and formed bogs. |
| The trees around the edges of bogs are similar to those found in regular boreal forests. Moving farther into the bog, there are species such as black spruce and tamarack, followed by an area of shrubs and a dense zone of herbaceous plants including Sphagnum Moss. In the center of the bog there may also be an area of open water. |
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