PlantFun
Plant Needs
Sunlight
Full sun to partial shade; tolerates cold, windy northern conditions; performs best in open, sunny sites
Watering
Drought-tolerant once established; water young saplings regularly during dry spells to support root development
Temperature
Extremely cold-hardy; withstands temperatures as low as -40°C; prefers cool temperate climates with moderate summer heat
Characteristics
- Leaf: Oval to triangular, 2–5 cm long, softly downy on undersides, with finely serrated margins.
- Flower: Male catkins are long, drooping, yellow-brown; female catkins are smaller, upright, green.
- Stem/Bark: Young stems have fine white down; mature bark is white with horizontal lenticels, less peeling than silver birch.
Care Guide
Watering
Water young trees weekly; established trees need only supplemental watering during prolonged drought
Fertilization
Apply balanced slow-release granular fertilizer once at bud break. Avoid high-nitrogen fertilizers which can promote leggy, frost-susceptible growth
Eggshell powder topdress：Crush baked, dried eggshells and sprinkle around the tree base; avoid direct contact with young, tender roots to prevent irritationPruning
- Remove dead, diseased, or crossing branches in late winter while dormant to minimize sap loss
- Thin crowded inner stems to improve airflow and light penetration for healthier foliage
- Trim back overly long, straggly branches to maintain a compact, upright habit
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA: Non-toxic to cats; no reported toxicity
Humans: Non-toxic to humans; no known adverse effects from ingestion or contact
Garden Uses & Culture
Culture: Symbolizes resilience and adaptability in harsh northern climates; used in traditional Scandinavian crafts
Usage: Ornamental landscape tree; wood used for furniture, fuel, and paper production
