PlantFun
Plant Needs
Sunlight
Requires full sun exposure to produce abundant flower spires; tolerates coastal salt spray
Watering
Allow the top 5 cm of soil to dry completely between waterings; drought-tolerant once established
Temperature
Hardy to mild frosts; protect from temperatures below 5°C; thrives in warm coastal climates
Characteristics
- Leaf: Silvery-gray, lanceolate leaves with hairy texture, arranged in basal rosettes
- Flower: Dense conical spires of tiny tubular blue to purple blooms, attractive to pollinators
- Stem: Woody branching stems covered in fine, soft hairs
Care Guide
Watering
Water deeply every 7–10 days during active growth to support blooming
Fertilization
Apply diluted balanced liquid fertilizer once monthly. Use low-nitrogen fertilizer to prioritize flower production over foliage growth
Eggshell powder topdressing：Crush dried eggshells into a fine powder, sprinkle lightly around the base of the plant, and water in to release calcium slowlyPruning
- Deadhead spent flower spikes after blooming to maintain a tidy appearance and encourage potential reblooming
- Prune back leggy stems by one-third in late summer to promote compact growth
- Remove damaged or diseased foliage promptly to improve airflow and reduce pest risk
- Avoid heavy pruning in winter to prevent frost damage to exposed stems
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA: Contains pyrrolizidine alkaloids, may cause liver damage with prolonged exposure
Humans: Sap may cause skin irritation; mild gastrointestinal upset if ingested
Garden Uses & Culture
Culture: Symbolizes coastal resilience and Mediterranean garden charm
Usage: Ornamental garden plant; attracts native bees, butterflies, and hummingbirds
