- leaves are edible when cooked; boil 10-60 minutes, until tender.
- roots can be cooked and eaten.
- varieties in British Columbia are White marsh-marigold (Caltha leptosepala) and Yellow marsh-marigold (Caltha palustris).
- grows in wet, open areas in montane, subalpine and alpine regions.
- warning: eat in moderation, avoid uncooked young leaves and flowers.