Knowledgebase
Proper care for Apricot trees #876848
Asked July 11, 2024, 2:59 PM EDT
Wayne County Ohio
Expert Response
Cankers are areas of dead cambium and bark and can occur on stems, limbs, and twigs. They are off-color, usually oval-shaped, and usually slightly sunken. Dark amber gum may exude from the canker edges. Cankers enlarge yearly or advance down side branches. Spores spread this fungus during wet weather, and successful infections occur in weak or wounded tissue.
Following is a link to Utah State University Extension site with more info, pictures and treatment options. Two pdf files are also attached with more info.
https://extension.usu.edu/planthealth/research/backyard-apricot-pests
As for the holes in the leaves, the Japanese Beetle is the most likely culprit. There are a number of insects that attack apricot trees but they mainly attack the fruit itself. You didn't mention any problem with the apricot. Following are a few more links to University Extension sites with more info about insects that attack apricot trees:
https://extension.illinois.edu/fruit-trees/pests
https://extension.usu.edu/yardandgarden/research/apricots-in-the-home-garden