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Arborvitae: browning foliage and root-zone checks

Thuja. Browning may follow drought, waterlogging, winter injury, pests or natural interior shedding.

Arborvitae

Light

Sun to light shade, with enough space and airflow.

Watering

Water deeply during establishment and dry periods without keeping roots waterlogged.

Soil

Moisture-retentive but free-draining soil.

More useful detail

Care over time

Through the seasons

Evergreens may lose water in windy winter weather; autumn moisture matters before freezing.

Growth and maintenance

Avoid cutting beyond green growth into old bare wood unless the cultivar can recover.

Plant

A simple care routine for Arborvitae

  1. 1

    Check the available light and moisture below the surface.

  2. 2

    Inspect the pattern and soil before cutting or applying a treatment.

  3. 3

    Track new growth and change only one condition at a time.

Observation

Changes worth checking

  • Browning spreading from one side
  • Webbing or feeding damage
  • A wet or bone-dry root zone
Important

Watering frequency changes with light, temperature, pot size and soil. Treat any interval as a reminder to check, not an automatic watering day.

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Related guides and features

Library Plant care library Practical plant profiles for light, watering, soil and the changes worth watching. Read the guide → Library Plant problems Yellow leaves, brown spots and root problems: learn what to inspect first and how to avoid making the situation worse. Read the guide → Feature Plant care and garden planner Florli brings plants, places, work history and weather into one focused list for today and the days ahead. Read the guide →
Sources and further reading: RHS: plants and gardening advice

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Prepared by Florli. This is general guidance. Sources are listed with each guide, and every decision should reflect the species, location, weather and the plant’s current condition.