Troubleshooting
Pyramidalis Arborvitae problems — and how to fix them
Pyramidalis Arborvitae (Thuja occidentalis 'Pyramidalis') 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.
Winter browning/desiccation
Cold, drying winds bleach foliage on exposed plants; water deeply before freeze-up and shelter where possible.
Bagworms
Spindle-shaped silk bags can defoliate branches; hand-pick in winter or treat young larvae in early summer.
Deer browsing
Highly palatable to deer, especially in winter; protect with fencing or repellents.
Interior browning from drought
Dry soil browns inner foliage and thins the hedge; deep regular watering and mulch prevent it.
Prevent pyramidalis arborvitae problems before they start
Most pyramidalis arborvitae issues are care-mismatch, not bad luck. Dial in the basics:
- Common arborvitae problems — the species this cultivar belongs to
- What's wrong with my plant? — the diagnosis apps compared
- Pyramidalis Arborvitae watering schedule
- Pyramidalis Arborvitae light requirements
- Best soil mix for pyramidalis arborvitae
- Pyramidalis Arborvitae temperature & humidity
- Full pyramidalis arborvitae care guide
Looking for pyramidalis arborvitae in general rather than its problems? Read the full pyramidalis arborvitae care guide — light, water, soil and feeding.
Pyramidalis Arborvitae problems — FAQ
Why is my pyramidalis arborvitae winter browning/desiccation?
Cold, drying winds bleach foliage on exposed plants; water deeply before freeze-up and shelter where possible.
Why is my pyramidalis arborvitae bagworms?
Spindle-shaped silk bags can defoliate branches; hand-pick in winter or treat young larvae in early summer.
Why is my pyramidalis arborvitae deer browsing?
Highly palatable to deer, especially in winter; protect with fencing or repellents.
Why is my pyramidalis arborvitae interior browning from drought?
Dry soil browns inner foliage and thins the hedge; deep regular watering and mulch prevent it.