One of the very first plants to emerge each spring — its purple-mottled spathe pokes through snow as early as February. Generates its own heat (thermogenesis) to melt surrounding snow.
§ Quick facts
§ Encyclopedia
Symplocarpus foetidus, commonly known as skunk cabbage or eastern skunk cabbage, is a low-growing plant that grows in wetlands and moist hill slopes of eastern North America. Bruised leaves present an odor reminiscent of skunk.
Source: Wikipedia — Symplocarpus foetidus Licensed under CC BY-SA 4.0
§ Identification
Field marks. Earliest spring: mottled purple-and-green hooded spathe enclosing a knob of small flowers. Later: massive bright green cabbage-like leaves.
Similar species. Western Skunk Cabbage (yellow spathe, Pacific Northwest). Jack-in-the-pulpit (different leaves). False Hellebore (different leaves, no spathe).
Voice. N/A — but heat is real (lessons of plant physiology)
§ Diet & behavior
Diet. N/A — photosynthesis
Behavior. Among the earliest spring "flowers" in northern wetlands — sometimes emerging through snow in February. Generates its own heat through thermogenesis, raising internal spathe temperature by 15–35°F above ambient air — a metabolic feat shared by very few plants. Heat melts snow and volatilizes the rotting-flesh-and-skunk odor that attracts emerging early-spring carrion flies for pollination. After flowering, develops cabbage-like green leaves that grow huge through summer.
§ Range
Eastern North America
§ Habitat
Wet woodlands, swamps, seeps
§ Threats
Wetland drainage, forest loss.
§ Conservation status
According to the IUCN Red List, the eastern skunk cabbage is currently classified as Least Concern.
§ What helps
Don't fill swampy yard corners. Support wetland protection. Tolerate the smell.
§ Further reading
- Wikipedia — Symplocarpus foetidus
- www.nwf.org — authoritative profile of Symplocarpus foetidus
- iNaturalist · taxon 47985
- IUCN Red List — search for Symplocarpus foetidus
- GBIF occurrence records
- Encyclopedia of Life — Symplocarpus foetidus
§ Sources cited
- USDA Plants Database
- Plant thermogenesis (Knutson 1974)
- Lady Bird Johnson Wildflower Center
