Troubleshooting
Threadleaf Sawara Cypress problems — and how to fix them
Threadleaf Sawara Cypress (Chamaecyparis pisifera 'Filifera') is generally forgiving once you match its basics, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Foliage browning at tips
Caused by dry soil, desiccating winds, or drought. Ensure adequate watering and mulching; provide wind shelter.
Root rot
Avoid planting in waterlogged or compacted soil. Improve drainage at the planting site before establishment.
Bagworm
Silk bags appear on stems in late summer. Remove by hand in late winter; apply Bacillus thuringiensis for severe cases.
Spider mites
Attack foliage in hot, dry summers causing bronzing. Improve irrigation and apply miticide if severe.
Prevent threadleaf sawara cypress problems before they start
Most threadleaf sawara cypress issues are care-mismatch, not bad luck. Dial in the basics:
Threadleaf Sawara Cypress problems — FAQ
Why is my threadleaf sawara cypress foliage browning at tips?
Caused by dry soil, desiccating winds, or drought. Ensure adequate watering and mulching; provide wind shelter.
Why is my threadleaf sawara cypress root rot?
Avoid planting in waterlogged or compacted soil. Improve drainage at the planting site before establishment.
Why is my threadleaf sawara cypress bagworm?
Silk bags appear on stems in late summer. Remove by hand in late winter; apply Bacillus thuringiensis for severe cases.
Why is my threadleaf sawara cypress spider mites?
Attack foliage in hot, dry summers causing bronzing. Improve irrigation and apply miticide if severe.