Many rare and usual herbaceous plants are found here, particularly orchids (e.g. Calopogon species, Pogonia ophioglossoides), sedges (e.g. Rhynchospora species) and carnivorous plants (e.g. Sarracenia species).
A genus Helleborine was formerly recognised but has now been absorbed into the Grass pink genus Calapogon.
The cranberry bog was well known by botanists as a location for several rare plants and orchids including the rose pogonia and grass pink orchids.
A few of many possible examples include species of Rhexia, Parnassia, Lobelia, many species of wild orchids (e.g. Calopogon and Spiranthes), and carnivorous plants such as Sarracenia and Drosera.