Fushimi Lake is ringed by a band of eastern white cedar, which in turn is surrounded by a thick, boreal forest, dominated by spruce, balsam, poplar and birch.

The narrow belt of cedar around the shoreline of the large lake is broken only by several large rock outcrops, and at the mouth of the Valentine River there is a stand of exceptionally large tamaracks. Smaller plants in the park include stemless lady slipper and Indian pipe. Raspberries are common in midsummer.