Generated by Gemini AI for Thuja occidentalis
Arborvitae Plant Care
Thuja occidentalis L.
Thuja occidentalis is a coniferous evergreen tree with a broad columnar growth habit. It has scale-like leaves and produces small cones. This plant is commonly known as Eastern arborvitae or American arborvitae.
Every 7–14 days
Full sun to bright indirect sunlight
20–100°F
40–70%
What Is the Arborvitae?
Arborvitae (Thuja occidentalis) belongs to the Cupressaceae family within the Thuja genus. Arborvitae is native to Eastern Canada, north-central and northeastern United States. Arborvitae is also known as Eastern Arborvitae, Northern White Cedar, American Arborvitae.
Arborvitae displays a broad columnar growth habit growth habit, reaching up to 30 inches tall with a spread of approximately 10 inches. Arborvitae produces the male cones are small and yellowish, measuring around 1-3 mm long.
Leaf size: approximately 1 inches.
How Often Should You Water a Arborvitae?
Thuja occidentalis requires watering every 7–14 days. Allow the top layer of soil to dry between waterings to prevent root rot. Reduce watering frequency during winter when growth slows.
Watering Frequency
Every 7–14 days
Let soil partially dry between waterings
What Light Does the Arborvitae Need?
Arborvitae thrives in full sun to bright indirect sunlight light conditions. The optimal light range is 1000–3000 lux. Avoid placing Arborvitae in direct, harsh sunlight for extended periods, as this can scorch the foliage.
Light Requirement
Full sun to bright indirect sunlight
1000–3000 lux
What Temperature and Humidity Does the Arborvitae Prefer?
Thuja occidentalis grows best at temperatures between 20°F and 100°F. Arborvitae prefers humidity levels of 40–70%.
Temperature
20–100°F
Humidity
40–70%
What Soil Mix Works Best for a Arborvitae?
Well-draining soil mix. Good drainage is essential for Arborvitae to prevent waterlogging, which leads to root rot and fungal issues.
How Do You Repot a Arborvitae?
Repot every 2-3 years in early spring. Choose a pot one size larger than the current container, and ensure it has drainage holes to allow excess water to escape.
How Do You Propagate a Arborvitae?
Arborvitae can be propagated through cuttings, layering, or seed propagation. Similar propagation techniques also apply to oriental arborvitae plant care, which shares the same genus.
Fertilizing
Every 2 months
During the growing season
Is the Arborvitae Toxic to Pets and Children?
Toxic to Pets & Children
No reports about toxicity to cats, toxic to dogs, potentially dangerous for horse fetuses if the mother consumed large quantities
What Pests and Diseases Affect the Arborvitae?
Arborvitae is susceptible to spider mites, bagworms, scale insects. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.
What USDA Hardiness Zone Does the Arborvitae Need?
Arborvitae grows outdoors in USDA Zone 2a – 7b. Native to Eastern Canada, north-central and northeastern United States, Arborvitae is adapted to warm climates. In cooler regions, grow Arborvitae as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 2a – 7b
Keep exploring plants
Arborvitae is one of many species covered in the complete plant care and identification guide, which groups plants by genus, attribute, and popularity.
It belongs to the Thuja genus — compare its care with other Thuja species on PlantoScan.
Arborvitae thrives in bright light and direct sun — see other bright-light plants.
More Thuja Species
Other Thuja species in PlantoScan's care catalogue share similar watering, light, and soil preferences:
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