To avoid Phytophthora root rot in junipers, improve drainage where junipers are grown. Remove and destroy any infected plants to avoid spreading the disease to new ones. Contact your local county agent of the OSU Extension Service for recommended chemical controls in your area. Also be alert for insect damage in ornamental junipers, warned Putnam. Cypress tip moths and related insects bore into leaves, causing them to turn brown and die.
Affected tissue is only about an inch or so long.