PlantFun
Plant Needs
Sunlight
Requires at least 6 hours of direct sunlight daily for optimal blooming; tolerates partial shade in hot summer regions
Watering
Water deeply when the top 5 cm of soil becomes dry; avoid overwatering to prevent root rot
Temperature
Cold hardy to USDA Zone 3; withstands harsh winter temperatures and mild summer heat up to 28°C
Characteristics
- Leaf: Simple, opposite, heart-shaped dark green foliage with smooth margins
- Flower: Dense panicle clusters of double creamy white blooms that fade to pale pink, intensely fragrant
- Stem: Woody, gray-brown upright branches with a rounded growth form
Care Guide
Watering
Water regularly during bloom period to support flower development; reduce watering after flowering
Fertilization
Apply balanced slow-release fertilizer in early spring before new growth emerges. Avoid high-nitrogen fertilizers that may reduce flower production
Eggshell powder amendment：Crush dried eggshells to fine powder, mix 1 cup of powder into the top 10 cm of soil to boost calcium levels and adjust pH to slightly alkalinePruning
- Remove spent flower clusters immediately after blooming to redirect energy to next year's flower buds
- Thin overcrowded interior branches in late winter to improve airflow and light penetration
- Trim back wayward stems in early spring to maintain a compact, rounded growth shape
- Remove dead or damaged wood in late winter to promote healthy new growth
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA: Non-toxic to cats; no reported adverse effects from ingestion
Humans: No known toxicity to humans; edible flower petals may be used in small culinary applications
Garden Uses & Culture
Culture: Symbolizes spring renewal, youthful innocence, and heartfelt gratitude in European floral traditions
Usage: Ornamental garden shrub, cut flower for fragrant floral arrangements, and edible flower petals for garnishes
