PlantFun
Plant Needs
Sunlight
Full sun to partial shade; tolerates urban pollution and compacted soils
Watering
Water deeply during prolonged dry spells; drought-tolerant once fully established
Temperature
Hardy to -20°C; thrives in temperate climates, avoids extreme summer heat above 35°C
Characteristics
- Leaf: Heart-shaped, dark green, serrated margins, pale undersides with fine, silvery hairs
- Flower: Clusters of creamy-white, highly fragrant blooms paired with narrow, leafy bracts
- Stem/Bark: Smooth gray bark in youth; develops deep, fissured ridges with age
Care Guide
Watering
Water deeply every 7–10 days during dry periods to support new growth
Fertilization
Apply balanced slow-release fertilizer once in early spring. Avoid high-nitrogen fertilizers to prevent excessive foliage growth at the expense of blooms
Eggshell powder topdress：Crush dried eggshells into fine powder; sprinkle 1–2 tbsp around the tree's drip line in spring; water thoroughly to release calcium into the soilPruning
- Remove dead, damaged, or crossing branches in late winter before new growth emerges
- Thin dense inner canopy growth to improve airflow and light penetration
- Avoid heavy pruning; only trim to maintain desired canopy shape or remove suckers at the base
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA confirms no toxicity to cats
Humans: No known toxic effects; flowers are safe for herbal tea preparation
Garden Uses & Culture
Culture: Symbolizes love and protection in European folklore; used in traditional herbalism for calming, sleep-inducing teas
Usage: Ornamental shade tree for urban parks and residential landscapes; flowers harvested for herbal infusions
