common hawthorn (Crataegus monogyna) observed in 8th Street & Forest, Chico, CA 95928, USA
iNaturalist: farmerjoeparker
Urban Ecology
Hawthorn can spread into wild areas and outcompete native plants, so knowing exactly where it grows in your city helps land managers and gardeners make informed choices about what to plant or remove near parks and open spaces.
Someone in Chico, California photographed and reported a common hawthorn — a thorny shrub originally from Europe — growing near 8th Street and Forest Avenue. Enough people agreed on the identification that it earned 'research-grade' status, meaning scientists can actually use this sighting in their studies. It's a small but real contribution to tracking where this plant is spreading across the US.
Key Findings
Research-grade observation confirmed at a specific street-level location in Chico, CA 95928
Common hawthorn (Crataegus monogyna) is a European native now documented in California's Central Valley
Single observation recorded via iNaturalist community verification process
chevron_right Technical Summary
A common hawthorn shrub was spotted and confirmed in a residential area of Chico, California, adding a verified data point to citizen science records of this European native in North America.
Abstract Preview
Research-grade observation of common hawthorn in 8th Street & Forest, Chico, CA 95928, USA.
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Species Mentioned
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Crataegus monogyna, known as common hawthorn, whitethorn, one-seed hawthorn, or single-seeded hawthorn, is a species of flowering plant in the rose family, Rosaceae. It grows to about 10 metres tall, producing hermaphrodite flowers in late spring. The berry-like pomes contain a stone-encased seed.