Chestnuts are primarily wind-pollinated, so the two or more pollenizers
need to be within about 200 feet of each other.
At the base of the petals on a newly opened flower is a small, sticky droplet of nectar to attract pollenizers
Since the males are of value only as pollenizers
, this allows the growers to use their resources for many more fruit producing female plants.
It was a Daviana that caught the blight last year in the northwest corner of Dorris Ranch, and scores of the pollenizers
are scattered liberally throughout the orchard.
They are generally beneficial, being insect parasites, predators, pollenizers
, or producers of honey and beeswax.