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Giant blue iris (Iris giganticaerulea) Care Guide
Care guide for Giant blue iris: light, watering, humidity, soil and temperature, based on the species' botanical profile.
📷 Brandon Johnson · CC BY 4.0 · GBIF/iNaturalist
⚠️ Giant blue iris is toxic to pets — see the toxicity page.
Care at a glance
LightPlenty of light; some direct sun is tolerated.
WaterWater roughly every 7 days, let the top 2-3 cm of soil dry out between waterings.
HumidityModerate to high humidity (40-60%).
TemperatureWarm and humid: 18-27 °C (65-80 °F); keep away from frost and cold drafts.
SoilWell-draining mix, slightly acidic to neutral pH (6.0-7.0).
Growthfast growth. Mature height ~0.9 m (3.0 ft).
Origin
Native to: Alabama, Louisiana, Mississippi.
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