Blood iris (Iris sanguinea)

Blood iris

Blood iris is a lovely bulb-shaped flower native to southeastern Asia. It has high ornamental value and is often grown in gardens for its distinctive and colorful flowers. Under optimal conditions, it tends to spread very fast. The Iris flower served as an inspiration for the decorative symbol of the French royalty, fleur-de-lis. This plant is generally considered to be toxic.

Scientific classification

Species

Blood iris (Iris sanguinea)

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Toxic to Pets

Toxicity

Perennial

Lifespan

Herb

Plant Type

Spring, Summer

Bloom Time

Mid summer, Late summer, Early fall

Harvest Time

90 cm

Plant Height

50 cm

Spread

Green, Purple

Stem Color

Winter dormancy

Dormancy

Deciduous

Leaf type

5 - 35 ℃

Ideal Temperature

Spring, Summer

Growth Season

Moderate

Growth Rate

Images of Blood iris

Distribution of Blood iris

Distribution Map

Blood iris is originally native to temperate regions of Eastern Asia. Its natural distribution encompasses the major regions of Northeast Asia including the Siberian area and parts of East Asia. Beyond its native range, blood iris has been successfully introduced and cultivated in various temperate zones across the globe, reflecting its adaptability to diverse environments and its recognition by horticulturalists.

Native

Cultivated

Invasive

Introduced

No species reported

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Habitat

Damp meadows, sunny pond banks, mountain stream banks, hillsides

Quickly Identify Blood iris

Hollow, branched stems; reach 2-3 feet (60-90 cm) in height

Linear, grass-like leaves; 10-30 inches (25-76 cm) long, 1/4 inch (0.6 cm) wide

Violet-blue flowers with 3 upright petals and 3 drooping sepals; 3 inches (7.6 cm) wide

Ellipsoidal fruit capsule, 2-3 inches (5-7.5 cm) long; green to brownish when ripe

Smooth, green stems; 20-45 inches (50-115 cm) tall, slender with limited branching

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Care Guide for Blood iris

Every week

Water

Full sun

Sunlight

5 - 35 ℃

Ideal Temperature

Garden Soil

Soil Type

Water: Originating from damp meadows in Asia, blood iris thrives in moist conditions but is drought-tolerant once established. Water weekly to maintain moisture balance, particularly during the growing season when adequate hydration enhances flowering. Typically grown outdoors, it benefits from natural rainfall patterns.

Fertilize: To ensure optimal growth of blood iris, use balanced fertilizers during the growing season and switch to high phosphorus before blooming. Fertilize every 4-6 weeks at half-strength, water before application, and reduce in winter to prevent over-fertilization and environmental harm.

Pruning: Blood iris thrives with minimal pruning, best done in early to late spring. Remove dead leaves and blooms to boost growth and prevent disease, cutting foliage to ground level post-frost. Proper pruning enhances airflow, reduces pests, and maintains appearance; use sterilized shears for best results.

Propagation: To propagate blood iris, use division by unearthing clumps and separating them, ensuring each section includes a rhizome and roots. Promptly replanting divisions aids in establishment and promotes healthy growth throughout the garden.

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