Light: Bright filtered shade or gentle morning sun; protect from Phoenix’s intense afternoon sun and reflected heat.
Water: High water needs; keep soil consistently moist during active growth. Check daily in extreme heat, especially in containers. Reduce watering during winter dormancy, keeping dormant tubers from remaining cold and soggy.
Soil: Rich, moisture-retentive soil amended with compost. Moist but well-drained soil suits most landscape plantings; some varieties also tolerate saturated soil or shallow pond margins.
Mature size: Typically 3–6 feet tall and 3–5 feet wide; dwarf and giant cultivars vary considerably.
Bloom: Occasional flowers in summer under favorable conditions; flowering is uncommon in many landscape varieties.
Evergreen / deciduous: Usually winter-dormant in Phoenix; frost kills foliage, but protected underground corms often survive Zone 9b winters.
Growth rate: Fast in warm weather with ample moisture and nutrients.