PlantFun
Plant Needs
Sunlight
Full sun is preferred; tolerates partial shade in hot, arid regions; avoid dense full shade
Watering
Drought-tolerant; water deeply only during extended dry spells; avoid overwatering to prevent root rot
Temperature
Extremely cold-hardy; tolerates temperatures as low as -30°C and summer heat up to 35°C
Characteristics
- Foliage: Juvenile leaves are sharp, awl-shaped; mature leaves are scale-like, overlapping in opposite pairs
- Cones: Female cones are berry-like, blue-black with waxy coating; male cones are small, yellow-brown
- Bark: Reddish-brown, fibrous, peeling in long vertical strips
Care Guide
Watering
Water deeply once every 2–3 weeks during prolonged dry periods
Fertilization
Apply a diluted balanced granular fertilizer once. Fertilize only if growing in nutrient-poor soil; avoid over-fertilization to prevent excessive foliage growth
Eggshell powder topdress：Crush dried eggshells into fine powder; sprinkle 1–2 tablespoons around the base of the tree in early spring; avoid direct contact with trunk to prevent rotPruning
- Remove dead, diseased, or crossing branches in late winter before new growth emerges
- Thin dense inner foliage to improve airflow and reduce disease risk
- Shape young trees to maintain desired form; avoid heavy pruning of mature specimens, as they regenerate slowly
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA: Toxic; contains thujone, may cause vomiting, diarrhea, lethargy
Humans: Ingestion may cause mild gastrointestinal upset; prolonged skin contact may cause irritation
Garden Uses & Culture
Culture: Symbolizes strength and longevity in some Native American traditions; used in holiday wreaths for its aromatic foliage
Usage: Ornamental windbreak tree; wood used for fence posts, aromatic cedar chests, and craft materials
