PlantFun
Plant Needs
Sunlight
Requires full sun for optimal flowering; tolerates partial afternoon shade in extremely hot climates
Watering
Allow soil to dry completely between waterings to prevent root rot; avoid overwatering
Temperature
Hardy to -5°C; thrives in warm, dry conditions; protect from prolonged heavy frost
Characteristics
- Leaf: Finely dissected, fern-like silver-gray foliage, aromatic when crushed
- Flower: Dense spikes of deep purple-blue blooms with showy bracts, strongly fragrant
- Stem: Woody, branching stems covered in silvery pubescence
Care Guide
Watering
Water deeply once weekly when top 5 cm of soil is dry
Fertilization
Diluted low-nitrogen feed once monthly. Over-fertilization can reduce flowering and increase foliage growth
Eggshell powder top-dress：Crush clean, dried eggshells to fine powder; sprinkle 1 teaspoon per pot on soil surface; avoid direct contact with plant rootsPruning
- Prune back by one-third after flowering to maintain compact, mounded shape
- Remove dead wood and spent flower spikes in early spring to encourage new growth
- Trim leggy stems mid-season to promote bushier foliage and additional blooms
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA: Non-toxic; no adverse effects from ingestion or skin contact
Humans: No significant toxicity; rare mild gastrointestinal upset only if extremely large quantities are ingested
Garden Uses & Culture
Culture: Symbolizes calm, relaxation, and devotion; widely used in aromatherapy for stress relief
Usage: Ornamental garden plant; aromatic foliage for potpourri, sachets, and herbal crafts
