PlantFun
Plant Needs
Sunlight
Requires at least 6 hours of direct full sun for abundant flowering; tolerates light partial shade in hot climates
Watering
Water deeply when the top 5 cm of soil is dry; avoid overwatering to prevent root rot
Temperature
Extremely cold-hardy, tolerating temperatures as low as -30°C; adapts to moderate summer heat up to 30°C
Characteristics
- Leaf: Oval to lanceolate, dark green, 5–10 cm long, with slightly fuzzy undersides
- Flower: Dense, 15–25 cm long panicles of fragrant lavender-purple tubular blooms
- Stem: Upright woody branches with smooth gray-brown bark
Care Guide
Watering
Keep soil consistently moist during the bloom period; reduce watering frequency after flowering ends
Fertilization
Apply balanced slow-release fertilizer in early spring before new growth emerges. Avoid high-nitrogen fertilizers, which can reduce flower production
Eggshell powder topdressing：Crush dried eggshells into fine powder; sprinkle 1 tablespoon per plant around the base in early spring; water lightly to incorporate into soilPruning
- Deadhead spent flower panicles immediately after blooming to encourage heavier blooms the following year
- Thin overcrowded branches in late winter to improve air circulation and sunlight penetration
- Remove damaged, diseased, or crossing wood annually to maintain plant structure and health
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA confirmed non-toxic; no harmful effects for cats from ingestion or contact
Humans: Non-toxic to humans; no documented adverse health effects from ingestion or contact
Garden Uses & Culture
Culture: Symbolizes love, remembrance, and spring renewal in Western horticultural traditions
Usage: Ornamental garden shrub; cut flower for fragrant floral arrangements
