Notes: The Gold Ridge Farm covers three acres and is planted with many odd and experimental plants. It was 18 acres in size when Luther Burbank owned it. Some of the trees might have had as many as 400 grafts on them. The farm is now listed in the National Register of Historic Places and kept running by the Western Sonoma County Historical Society.
particularly interesting because I think there is a non-zero chance that the Amanita muscaria and queen-type bolete present here (associated with chestnuts as far as I can tell) are of European lineages.