Fen Grass of Parnassus is a delicate wildflower of calcareous wetlands, fens, and wet cliffs, producing single white flowers with intricate greenish veins on long slender stems. It grows in cold, calcium-rich, nutrient-poor habitats and is an indicator of high-quality fen conditions. Small bees and flies pollinate it.
Best time to see a Fen Grass of Parnassus
The best time to see a Fen Grass of Parnassus is August–September, when about 77% of U.S. sightings happen, based on 2,460 research-grade iNaturalist observations.
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Recent Fen Grass of Parnassus sightings near you
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