Wetter forests support stands of the smaller black spruce. Wetter still are the low brush bogs and muskeg swamps, sometimes highlighted by cotton grass plumes. Large parts of the area have been burned by forest fires in the past 100 years, resulting in thick stands of birch, which precede the older forests of white spruce. Wildflowers abound, from the earliest violets and bluebells, through the last flower on the tip of the tall fireweed. Water-loving plants, such as bog rosemary and wild iris, are found in wet areas throughout the park.
Water lilies decorate many of the lake surfaces.
Beginning in late July, the first wild berries begin to ripen. Currants, highbush and lowbush cranberries, and blueberries frequently provide a bountiful harvest. Varieties of raspberry, crowberry and other berries can also be found. Pickers should learn to identify baneberry, which looks edible, but is very poisonous. In recent years, spruce bark beetles have moved into the recreation area, and the effects of the beetle larvae feeding under the bark can be seen.