Giant blue iris (Iris giganticaerulea)

Giant blue iris

The largest species of Louisiana irises is the giant blue iris of North America. It can reach a height of 1.8 m. This plant grows in damp meadows, marshes, and bogs and produces enormous purplish-blue blooms. The rooted cuttings of this plant are used to extract the "essence of violets," which is employed in the production of perfumes.

Scientific classification

Species

Giant blue iris (Iris giganticaerulea)

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Toxic to Pets

Toxicity

Perennial

Lifespan

Herb

Plant Type

91 cm

Plant Height

90 cm to 1.5 m

Spread

13 cm to 15 cm

Flower Size

White, Yellow, Purple, Blue

Flower Color

Evergreen

Leaf type

Care Guide for Giant blue iris

Every week

Water

Full sun

Sunlight

15 - 38 ℃

Ideal Temperature

Garden Soil

Soil Type

Water: Giant blue iris thrives in wetland habitats, requiring consistently moist soil and weekly watering for optimal growth. It is not drought-tolerant and flourishes outdoors in regions with ample rainfall, reflecting its preference for high moisture levels.

Fertilize: Giant blue iris thrives with balanced nutrition and high-phosphorus fertilizers, applied biannually in spring and late summer, at 2-4 ounces per square yard. Fertilize on moist soil and water afterward to avoid root burn and optimize nutrient absorption as giant blue iris transitions to dormancy.

Pruning: Giant blue iris features vibrant blue flowers and thrives with regular pruning in late winter to early spring. Remove dead or faded foliage to boost blooming and reduce disease. Pruning enhances air circulation and growth, necessitating clean, sharp cuts to protect the plant's health.

Propagation: Giant blue iris can be propagated effectively through tubers by dividing its underground structures, ensuring each piece has a growth point. Plant in well-drained soil with ample water to establish roots, rejuvenating older clumps for increased growth and bloom production.

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Care Guide for Giant blue iris

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