PlantFun
Plant Needs
Sunlight
Full sun exposure is required for optimal flowering; tolerate partial shade during extreme midday heat in arid regions
Watering
Water deeply during the growing and flowering season; allow the top 5–7 cm of soil to dry completely between waterings to prevent rhizome rot
Temperature
Tolerates mild frost down to 5°C; avoid prolonged temperatures above 35°C to prevent heat stress
Characteristics
- Leaf: Sword-shaped, gray-green linear leaves forming dense, upright clumps
- Flower: Velvety deep purple-black petals with bright yellow signal patches; lightly fragrant
- Rhizome: Thick, fleshy underground rhizomes adapted for water storage
Care Guide
Watering
Keep soil evenly moist during flowering; reduce watering after blooms fade to encourage rhizome dormancy
Fertilization
Diluted balanced liquid feed every 2 weeks. Use a low-nitrogen feed to promote flower production rather than foliage growth
Eggshell powder topdressing：Crush dried, sterilized eggshells into fine powder; sprinkle lightly around rhizome bases in early spring; avoid direct contact with foliage to prevent burningPruning
- Remove spent flower stalks immediately after blooming to redirect energy to rhizome growth
- Trim yellowing or damaged leaves at the base in late autumn
- Divide overcrowded rhizomes every 3–4 years in early spring to maintain plant health
- Clear dead foliage in winter to reduce fungal disease risk
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA confirmed toxic; ingestion causes gastrointestinal upset, lethargy, and abdominal pain
Humans: Rhizomes contain iridin glycosides; ingestion causes oral irritation, nausea, and vomiting
Garden Uses & Culture
Culture: National flower of Jordan; symbolizes resilience and elegant beauty in arid landscapes
Usage: Ornamental garden plant; used in cut flower arrangements for its dramatic blooms
