Bicolor Iris – Desert Horizon Nursery

Bicolor Iris

Dietes bicolor

Light
Water
Moderate water in Phoenix; irrigate deeply, allowing the upper few inches of soil to dry between waterings. Water more frequently during extreme summer heat and less in winter.
Toxicity
Description
A clumping, rhizomatous perennial with narrow, arching, sword-shaped leaves and pale yellow, iris-like flowers marked with dark spots.
Deciduous / Evergreen
Special Features
Growth Rate
Growth Habit
Foliage Color
Not established — verify
Care Instructions

Light: Morning sun with afternoon shade is best in Phoenix; avoid reflected heat and intense western exposure.

Water: Moderate water in Phoenix; irrigate deeply, allowing the upper few inches of soil to dry between waterings. Water more frequently during extreme summer heat and less in winter.

Soil: Well-drained soil enriched with compost; tolerates sandy or clay soils provided drainage is adequate.

Mature size: 2–3 feet tall and 3–4 feet wide; flower stalks may rise above the foliage.

Bloom: Repeated flushes from spring through fall, strongest in spring and early summer; extreme heat may reduce flowering.

Evergreen / deciduous: Evergreen in mild winters; hard freezes can brown or damage foliage.

Growth rate: Moderate.