Italian Cypress Sequential Decline: Spider Mite and Soil Investigation

Mary in Northern California: 10 Italian cypress screen. 3 years ago tree 1 yellowed (removed). 2 months ago tree 2 yellowed (removed). Now tree 4 yellowing. Barely water/feed. Boxwood hedge also dying in same spot (replanted twice, failed).

Expert Analysis

Steve: Italian cypress prefers well-drained soil (unlike bald cypress). Standing water causes issues. Key suspect: spider mites.

Spider Mite Test

• White paper under yellow twig
• Tap twig over paper
• Look for tiny yellow-red crawling specks
• Test multiple twigs

Boxwood Connection

Soil issue likely for boxwood failures. Wet spot? Photo requested.

Follow-Up

Mary confirmed Italian cypress (not bald). Will check for bark damage and spider mites. Boxwood deaths suggest soil problem in that location.

Key Insight

Sequential tree loss in a row suggests progressive soil/pathogen issue or pest spread. Spider mites on cypress + boxwood failure in same zone = investigate soil drainage and pest pressure systematically.