Rugged California Buckeye tree is a fixture in Rossmoor One of Rossmoor’s native tree species is the California Buckeye, or the California Horse-Chestnut. While other celebrated California natives like Redwoods and Valley Oaks might be described as iconic or majestic, Buckeyes may be more accurately described as tenacious or determined. Evolved to make use of local climate conditions, Buckeyes