How to Manage Pests
Pests in Gardens and Landscapes
and life cycle—Shot hole
The fungus that causes shot hole survives the dormant season inside infected buds and in twig lesions.
The spores produced on lesions can remain alive for several months. They are spread by splashing rain
or irrigation water. Spores that land on twigs, buds, blossoms, or young leaves require 24 hours of continuous
wetness to cause infection. Only the current season's growth is susceptible to infection. In California,
twig and bud infections of apricot, nectarine, and peach can occur during rainy weather any time between
fall and spring. The fungus can germinate and infect at temperatures as low as 36° F.
hole overwinters in twig lesions