Bearded Dragon Care Sheet: Enclosure, UVB, Temps & Diet

Bearded dragons are personable, active lizards — but they need the most space, the strongest UVB and the most careful diet of any beginner species.

Updated November 2026 · By the ReptiGuide team

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Bearded dragon basking on a rock in a desert enclosure
Adult size16–24 in (40–60 cm)
Lifespan10–15 years
Basking surface100–110°F (38–43°C)
Cool side75–85°F (24–29°C)
Humidity30–40%
Min enclosure4×2×2 ft
UVBEssential — T5 HO 10–14%
DietInsects + greens

Is a bearded dragon right for you?

Bearded dragons (Pogona vitticeps) come from the arid woodland and scrub of central Australia. They're diurnal (active in the day), curious, and many enjoy time outside the enclosure, which makes them one of the most interactive pet reptiles.

They're also a real commitment: a large enclosure, strong lighting, daily fresh greens, and live insects, especially for juveniles. Budget for the setup before buying the dragon; a proper setup usually costs more than the animal.

Enclosure

Animal Minimum Better
Juvenile Can go straight into the adult enclosure —
Adult (one dragon) 4×2×2 ft (120 gallons) 5×2.5×2 ft or larger

Front-opening PVC or wood enclosures hold heat better than all-glass tanks and are easier to light properly. Older advice suggesting a 40-gallon tank for an adult is outdated.

Add a sturdy basking platform (a flat rock or cork log) under the heat and UVB, branches to climb, a couple of hides, and digging substrate. Never house bearded dragons together; they're solitary and cohabiting often leads to injuries and dominance stress.

Popular pick

Zen Habitats 4x2x2 Reptile Enclosure

A widely used flat-pack 4×2×2 enclosure that holds heat well and has room for a full-length UVB tube.

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Heating

Bearded dragons need a strong basking area and a clear gradient:

Use halogen flood bulbs for basking: they produce visible light and heat like the sun. Two bulbs clustered together create a wider, more even basking spot than one. Run them through a dimming thermostat, and measure the basking surface with an infrared temperature gun.

UVB lighting (essential)

Bearded dragons cannot stay healthy without proper UVB. Without it, they can't make vitamin D3, can't use calcium, and develop metabolic bone disease.

We go deeper on this in our bearded dragon UVB setup guide.

Humidity

Keep humidity around 30–40%. Bearded dragons don't need misting, and persistently high humidity raises the risk of respiratory infections. Good ventilation matters.

Substrate

A soil and sand mix (about 60–70% topsoil to 30–40% play sand) lets dragons dig and holds a natural texture. Tile or paper towel are simple, easy-to-clean alternatives. Avoid calcium sand and walnut shell.

Diet

What a bearded dragon eats changes dramatically as it grows:

Age Insects Greens/veg
Hatchling–6 months ~70–80% of diet, 2–3 feedings a day Fresh salad daily
6–12 months ~50%, once or twice a day Fresh salad daily
Adult (12–18 months+) ~20%, a few times a week ~80%, fresh daily

Good staple greens: collard greens, mustard greens, turnip greens, dandelion greens, endive/escarole, and squash. Treats only: fruit. Avoid: lettuce (no nutrition), spinach and other high-oxalate greens as staples, and never feed fireflies or wild-caught insects.

Staple insects: dubia roaches, black soldier fly larvae, crickets and silkworms. Superworms and waxworms are occasional treats. Insects should be no larger than the space between the dragon's eyes.

Supplements: dust insects with plain calcium at most feedings, and a multivitamin about once a week.

Supplement

Repashy Calcium Plus LoD

Calcium and multivitamin powder designed for animals with good UVB.

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Brumation

Many adult bearded dragons slow down in autumn and winter, eat less and sleep for days or weeks. This is called brumation and is normal. Before assuming it's brumation, rule out illness: a fecal check by a reptile vet is a good idea the first time. Keep water available and the lighting on its normal schedule.

Common mistakes

  1. Coil UVB bulbs or UVB behind glass. This is one of the leading causes of metabolic bone disease.
  2. Not replacing UVB tubes yearly.
  3. Too many insects for adults, which leads to obesity and fatty liver.
  4. Basking spot too cool, which causes poor digestion and appetite.
  5. Enclosures under 4×2×2 ft for adults.

Signs of a healthy bearded dragon

Alert, bright eyes, a strong grip, a full appetite (appropriate for age), regular firm droppings with white urates, and a dragon that basks and moves around through the day. Swollen or soft jaw or limbs, tremors, lethargy outside of brumation, or runny droppings need a reptile vet.

FAQ

What size enclosure does a bearded dragon need? At least 4×2×2 ft (120 gallons) for an adult; larger is better.

What UVB is best for a bearded dragon? A T5 high-output linear tube labelled 10–14%, covering half to two-thirds of the enclosure, replaced every 12 months.

How hot should a bearded dragon basking spot be? About 100–110°F (38–43°C) for adults, with a cool side of 75–85°F (24–29°C).