Early-spring bloomers are plants that flower before or shortly after snowmelt, often relying on stored energy reserves and specialized cold-tolerance mechanisms to reproduce during periods of minimal competition and peak pollinator activity. Understanding these plants is critical to plant science because they serve as sensitive indicators of phenological shifts driven by climate change, with even small temperature variations significantly altering their bloom timing and reproductive success. Researchers study them to uncover the molecular and physiological adaptations—such as vernalization responses and antifreeze proteins—that allow plants to thrive in unpredictable late-frost conditions.
Colt's-foot, a small yellow wildflower that blooms before its leaves appear, is one of the most-watched plants on iNaturalist this week with 214 research-grade observations — a sign that citizen scientists are tracking its early spring emergence across the Northern Hemisphere.
1
214 research-grade observations of colt's-foot were recorded on iNaturalist in a single week, placing it among the most-observed plant species globally for that period.
2
Colt's-foot (Tussilago farfara) blooms before its leaves emerge, making it one of the earliest flowering plants of the year and a key phenology marker for late winter to early spring.
3
The spike in citizen-science sightings suggests a coordinated bloom event, likely driven by warming temperatures in early-to-mid April across temperate regions.
mail
Weekly plant science — one email, Saturdays.
Check your inbox to confirm — link expires in 24 hours.
Something went wrong — please try again.
Too many signup attempts from your network. Try again in an hour, or email hello@plant.news.
