Placerville - Institute of Forest Genetics
Eddy Arboretum at the Institute of Forest Genetics
The first plantings were made in the spring of 1926. Because genetic
diversity is the raw material for breeding, one of the first concerns
was to assemble as many pine species and varieties as possible.
The seeds used to establish the Arboretum came almost exclusively
from native stands, whether from the United States or other countries,
and their precise origins were meticulously recorded, often mapping
the location of each parent tree. The arboretum was laid out in
such a way that the species of pines were separated according to
relationship groups established by Shaw in 1914 (The Genus Pinus).
The Eddy Arboretum contains one of the best-documented collection
of pines in the world, in addition to many other native
and exotic conifers. Seventy-eight pine species, 24 firs, and many other
conifers are presently included in the collection. Some sections
of the Arboretum are devoted to collections that sample the entire
range of genetic diversity in particular California conifers, such
as Pinus lambertiana and Pinus coulterii.