American holly tree at the Richardson Preserve on Wilmarth Street. Image credit: C. Adler Holly trees at the Richardson Preserve signal the approach of the holiday season Posted on December 2, 2021March 1, 2022 by caa After a night of rain, sleet, and snow, the Richardson Nature Preserve glistened on a December morning in 2019. An American holly tree is in the foreground. The red berries, found only on female trees, provide food for many birds. Posted in OBSERVATION and tagged richardson.