Blue Iguanas are striking, intelligent, and impressive reptiles known for their bold coloration and strong personalities. They require a dedicated keeper and a properly maintained environment to thrive. This Herp Overload care guide covers everything needed to raise a healthy, confident Blue Iguana.
Enclosure & Habitat Setup
Enclosure Size
Blue Iguanas grow large and require spacious housing, especially as adults.
Juveniles: 40–75 gallons
Sub-adults: 4x2x3 ft
Adults: Minimum 8x4x6 ft, larger strongly recommended
Outdoor enclosures (in warm climates) are excellent for natural sunlight and healthy growth.
Safe Substrates
Cypress mulch
Organic soil mix
Coconut husk
Reptile-safe mulch
For juveniles: paper towels or reptile carpet
Avoid sand, gravel, or loose particulate that could cause impaction.
Temperature & Heating
Blue Iguanas originate from hot climates and require strong heat and proper gradients.
Basking spot: 100–110°F
Warm side: 90–95°F
Cool side: 75–82°F
Night: 70–75°F
Use high-quality basking bulbs, ceramic heaters, or flood heat lamps. Always monitor temperature with accurate thermometers.
Lighting Requirements
Blue Iguanas need strong, high-output UVB to maintain bone health and proper metabolism.
Use a T5 HO 10.0 / 12% UVB tube
Enclosure should allow full basking exposure
Replace bulbs every 6–12 months
Provide a 12–14 hour light cycle daily
Outdoor natural sunlight is ideal when safe and supervised.
Humidity Levels
Blue Iguanas thrive with moderate humidity, balanced with good airflow.
Humidity range: 55–70%
Mist enclosure daily
Add live plants, moss, and a large water dish
Proper humidity supports hydration and healthy shedding.
Diet & Nutrition
Blue Iguanas are primarily herbivores, requiring a plant-based diet rich in variety.
Daily Greens
Collard greens
Mustard greens
Turnip greens
Endive
Dandelion greens
Bok choy
Vegetables
Squash
Bell peppers
Green beans
Carrots (moderation)
Fruits (treats only)
Berries
Mango
Papaya
Melon
Avoid: romaine-only diets, iceberg lettuce, corn, animal protein, or dog/cat food.
Supplements
Calcium without D3: 3–5x per week
Calcium with D3: 1x per week
Multivitamin: 1–2x per week
Water & Hydration
Blue Iguanas require constant access to clean, fresh water.
Provide a large, sturdy water bowl
Mist enclosure to boost hydration
Offer occasional soaks
Proper hydration helps prevent shedding issues and supports digestion.
Enrichment & Behavior
Blue Iguanas are intelligent and benefit from an enriched environment.
Provide:
Large branches for climbing
Platforms and ledges
Rocks and logs
Safe plants
Visual barriers to reduce stress
Regular interaction builds trust and helps tame your iguana over time.
Handling & Temperament
Blue Iguanas can become extremely calm and handleable with consistent interaction.
Tips:
Start slow and move confidently
Support the entire body
Avoid sudden movements
Build trust with gentle, daily sessions
Always respect their size and strength, especially during maturity.
Shedding
Blue Iguanas shed in sections as they grow.
Maintain proper humidity
Offer rough surfaces and branches for rubbing
Increase misting during shed cycles
Never pull shedding skin.
Common Health Concerns
Watch for:
Lack of appetite
Lethargy
Swollen limbs (possible MBD)
Trouble climbing
Retained shed
Respiratory issues
Weight loss
Consult a reptile veterinarian at the first sign of illness.
Lifespan & Growth
Blue Iguanas are long-lived reptiles, typically living 25–40+ years in proper care.Adults reach 4–5 feet on average, with some larger individuals.
