Giant Blue Iris (Iris Giganticaerulea) is a perennial herb in the Iridaceae family with moderate care difficulty. It requires high watering and full sun or partial shade light in USDA hardiness zones 7-9. This plant is toxic to cats and dogs — keep it out of reach of pets.
Iris giganticaerulea is a large Louisiana iris known for its very large flowers ranging in color from light blue to lavender and purple, sometimes white to yellowish-white.

Giant Blue Iris
Iris Giganticaerulea
Iris giganticaerulea is a large Louisiana iris known for its very large flowers ranging in color from light blue to lavender and purple, sometimes white to yellowish-white.
Quick Facts
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Growing Conditions
Care Calendar
Monthly care tasks for Giant Blue Iris
Expert Care Tips
Pro tips from botanists and plant experts
Watering Tip
Check soil moisture by inserting your finger 1 inch deep. Water only when the top layer feels dry to prevent overwatering.
Humidity Trick
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Growth Hack
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