Bearded Dragon Care: A Beginner's Guide

Bearded dragons are one of the best beginner reptiles — calm, curious, and genuinely interactive. But "beginner-friendly" doesn't mean low-effort. Most of the health problems vets see in beardies trace back to a handful of setup mistakes: too little heat, missing or weak UVB, and an unbalanced diet. Get those right and you've won most of the battle.

This guide walks through the essentials with commonly accepted ranges. Care recommendations evolve and individual needs vary, so treat this as a solid starting point and confirm anything health-related with an exotics vet.

Enclosure size

Bigger is better. A single adult bearded dragon needs a 120 x 60 x 60 cm (roughly 4 x 2 x 2 feet, about 120 gallons) enclosure as a practical minimum, and many keepers go larger. Hatchlings can feel lost in a huge tank, but you can grow them into a big enclosure by adding hides and clutter rather than buying a tiny one you'll replace in months. Front-opening vivariums hold heat well and are less stressful to reach into than top-opening tanks.

Temperature and a heat gradient

Beardies are desert reptiles that thermoregulate by moving between hot and cool zones, so you must build a gradient — never one uniform temperature.

• Basking spot: about 38-42°C (100-107°F). Aim hatchlings toward the warmer end and adults toward the cooler end of that band.
• Cool side: about 26-29°C (80-85°F).
• Night: a drop into the low 20s°C (high 60s-low 70s°F) is fine; most setups don't need night heat.

Use a white basking bulb for daytime heat and light, and measure real surface temperatures with a digital probe or infrared temp gun — the cheap stick-on dial thermometers are notoriously inaccurate.

UVB lighting (non-negotiable)

This is the one beginners most often get wrong. Without UVB, a bearded dragon cannot make vitamin D3, can't use dietary calcium, and develops painful metabolic bone disease. Use a quality linear T5 UVB tube that spans much of the enclosure length (not a small coil bulb), mount it at the distance the manufacturer specifies, and run it 10-12 hours a day. UVB output fades long before the bulb stops glowing, so replace it on schedule — often every 6-12 months depending on the model.

What bearded dragons eat

Beardies are omnivores, and the balance shifts with age:

• Babies and juveniles: mostly insects, fed multiple times a day, plus greens always available.
• Adults: mostly leafy greens and vegetables, with insects a few times a week.

Good staple insects include dubia roaches and crickets; good greens include collard, mustard and dandelion greens. A simple rule: never feed an insect wider than the space between your dragon's eyes. Dust insects with calcium at most feedings, and add a calcium-with-D3 and a multivitamin on a regular, less-frequent schedule. Avoid spinach, iceberg lettuce as a staple, and anything wild-caught.

Hydration

Bearded dragons get much of their water from food, but still offer fresh water and mist greens lightly. Many keepers find their dragon drinks during a shallow, supervised warm bath a couple of times a week — which also helps with shedding. Persistent sunken eyes or lethargy can signal dehydration and warrant a vet visit.

Common beginner mistakes

• Weak or expired UVB — the silent cause of bone disease.
• Loose particulate substrate with hatchlings, which risks impaction; many keepers prefer non-particulate surfaces for young dragons.
• Guessing temperatures instead of measuring with a probe.
• Too few greens for adults, or feeders that are too large.
• Not tracking weight, so a slow decline goes unnoticed until it's serious.

Keep records as you go

The keepers whose dragons do best are usually the ones who write things down. Logging weight in grams, sheds, appetite and the occasional photo turns vague worry ("is he eating less?") into something you can actually see. Our app Beardie Days is built for exactly this — log temps, weight, feeding and shedding, watch a growth photo timeline build from hatchling to adult, and export everything to CSV. For what's normal at each age, see our bearded dragon growth chart, and if you're weighing how to record it all, our app vs spreadsheet comparison lays out the options.

"The day I started logging weight, I caught a slow dip two weeks before it would've become obvious — and the vet said early was everything."

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Keep reading: Bearded Dragon Growth Chart · App vs Spreadsheet Tracking. Health concerns? Always consult an exotics vet. Questions for us? Email us.