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Early Bloom of Hamamelis vernalis Documented Across Missouri

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Summary

8.7/10

Ozark witch-hazel is blooming 3 weeks early across Missouri, driven by January temperatures 2.8C above the 30-year average.

Key Findings

3-week phenological advance

47 observation sites confirm trend

Correlates with +2.8C January anomaly

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Original Abstract

Community observations document Ozark witch-hazel blooming 3 weeks earlier than historical average across 47 observation sites in Missouri. Phenological shift correlates with above-average January temperatures (mean +2.8C vs 30-year norm).

Species Mentioned

Witch Hazel

phenology climate-shift early-bloom

eco Witch-hazel

Witch-hazels or witch hazels (Hamamelis) are a genus of flowering plants in the family Hamamelidaceae, with three species in North America, and one each in Japan (H. japonica) and China (H. mollis). The North American species are occasionally called winterbloom.

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