Quick Answer: Bearded dragons are omnivores with age-specific dietary needs. Juveniles (under 1 year) require 70% insects and 30% vegetables, while adults need 70% vegetables and 30% insects. Feed juveniles 2-3 times daily and adults once daily with proper supplementation.
Getting your bearded dragon's diet right is the foundation of their health, but the internet is flooded with conflicting advice. After 11 years of keeping bearded dragons and working as a vet tech, I've seen too many dragons suffer from improper feeding — from metabolic bone disease in juveniles fed too many greens to obesity in adults getting too many crickets.
Understanding Bearded Dragon Dietary Needs by Life Stage
The biggest mistake new owners make is feeding all bearded dragons the same way. A 3-month-old juvenile has completely different nutritional requirements than a 3-year-old adult. Their digestive systems, growth rates, and activity levels change dramatically as they mature.
Juveniles are growth machines. They're adding length and weight daily, which requires high-protein foods to build muscle and bone. Adults have finished growing and focus on maintenance, requiring more fiber and plant matter to support their digestive health while preventing obesity.
I've tracked the growth rates of my breeding colony, and juveniles fed the proper insect-to-vegetable ratio consistently reach adult size 2-3 months faster than those fed adult diets too early. This isn't just about size — proper juvenile feeding prevents developmental issues that can plague dragons throughout their lives.
Juvenile Bearded Dragon Diet (0-12 Months)
Feeding ratio: 70% insects, 30% vegetables Frequency: 2-3 times daily Portion size: As many appropriately-sized insects as they can eat in 10-15 minutes
Juveniles under 4 months should eat three times daily, while those 4-12 months can transition to twice daily. I feed my juveniles at 8 AM, 1 PM, and 6 PM during their peak growth phase.
Best Insects for Juveniles
Dubia roaches are my top choice. They're 20% protein, easy to digest, and don't smell like crickets. I buy 500 small dubias monthly from Rainbow Mealworms (~$35 at time of writing). The rule is simple: insects should be no larger than the space between your dragon's eyes.
Crickets work well but require more maintenance. I use Fluker's medium crickets for dragons 6+ months old. Gut-load them 24 hours before feeding with Fluker's High-Calcium Cricket Diet.
Black soldier fly larvae (Phoenix worms) are calcium-rich and perfect for young dragons. Their soft exoskeleton makes them easy to digest. I use them as 20-30% of the insect portion.
Avoid mealworms for juveniles. Their hard chitin shells can cause impaction in young digestive systems. I've seen this happen twice in my years as a vet tech — both cases required expensive surgery.
Vegetables for Growing Dragons
Even though vegetables make up only 30% of a juvenile's diet, establishing good eating habits early is crucial. I chop vegetables into tiny pieces — about the size of the dragon's nail.
Daily staples:
- Collard greens (highest calcium)
- Mustard greens
- Turnip greens
- Squash (yellow or butternut)
- Bell peppers (any color)
2-3 times per week:
- Carrots (high in vitamin A)
- Sweet potato
- Green beans
- Broccoli (small amounts — can bind calcium)
I prepare a week's worth of vegetables every Sunday, chopping and storing them in separate containers. This makes daily feeding much faster and ensures variety.
Adult Bearded Dragon Diet (12+ Months)
Feeding ratio: 70% vegetables, 30% insects Frequency: Once daily Portion size: Salad bowl packed with vegetables, insects 2-3 times per week
This flip in ratios catches many owners off-guard, but it's essential. Adult dragons who continue eating juvenile diets become obese and develop fatty liver disease. I've weighed my adult colony weekly for years, and those fed properly maintain stable weights between 400-600 grams.
Building the Perfect Adult Salad
I use a formula that's served me well: 50% leafy greens, 30% vegetables, 20% occasional treats. The salad should fill a bowl roughly the size of your dragon's head.
Leafy green base (rotate these):
- Collard greens (my dragons' favorite)
- Mustard greens
- Turnip greens
- Dandelion greens (if pesticide-free)
- Escarole
- Endive
Vegetables to add:
- Squash varieties (butternut, acorn, yellow)
- Bell peppers
- Carrots
- Sweet potato
- Green beans
- Okra
- Snap peas
Weekly treats (small amounts):
- Berries (blueberries, strawberries)
- Apple slices
- Grapes (cut in half)
- Melon
Insects for Adults
I feed my adult dragons insects 2-3 times per week, not daily. Monday, Wednesday, Friday works well. Offer 10-15 appropriately-sized insects per feeding.
Best adult insects:
- Large dubia roaches
- Adult crickets
- Hornworms (as treats — they're 85% water)
- Silkworms (expensive but nutritious)
- Superworms (occasionally — higher fat content)
Rotation prevents boredom and ensures varied nutrition. I keep three insect types on hand and rotate weekly.
Foods to Absolutely Avoid
Some foods are toxic and can kill your dragon. I keep this list on my phone because the consequences are severe.
Toxic foods:
- Avocado (causes heart failure)
- Rhubarb (oxalates cause kidney damage)
- Iceberg lettuce (nutritionally empty, can cause diarrhea)
- Spinach (high oxalates bind calcium)
- Wild-caught insects (pesticide contamination)
- Fireflies/lightning bugs (extremely toxic)
- Citrus fruits (too acidic)
- Onions and garlic (damage red blood cells)
Questionable foods to limit:
- Broccoli (occasional only — can bind calcium)
- Cabbage (goitrogens can affect thyroid)
- Beet greens (high oxalates)
- Chard (high oxalates)
I've seen dragons hospitalized from well-meaning owners feeding "healthy" foods like spinach daily. When in doubt, stick to the safe lists above.
Supplementation Schedule That Actually Works
This is where most feeding guides fall short. Supplementation isn't optional — it's life-or-death for captive dragons who don't get natural UV exposure and varied wild diets.
My Proven Supplementation Routine
For juveniles:
- Calcium with D3: Every other day (I use Rep-Cal Calcium with D3)
- Calcium without D3: On off-days
- Multivitamin: Once weekly (Herptivite works well)
For adults:
- Calcium with D3: Twice weekly
- Calcium without D3: Once weekly
- Multivitamin: Every other week
I dust insects by shaking them in a small container with supplement powder. For vegetables, I lightly sprinkle powder over the salad. Too much supplementation causes problems — I've seen dragons with vitamin A toxicity from over-supplementing.
The UV Connection
Even with D3 supplementation, proper UVB lighting is non-negotiable. I use Reptisun T5 HO 10.0 bulbs in all my enclosures and replace them every 8-10 months, even though they still produce visible light. UV output degrades before you can see it.
Feeding Schedule and Practical Tips
Consistency matters more than perfection. I feed my dragons at the same times daily, which regulates their digestive cycles and reduces stress.
Sample juvenile schedule:
- 8:00 AM: Insects + vegetables
- 1:00 PM: Insects only
- 6:00 PM: Insects + vegetables
Sample adult schedule:
- 10:00 AM: Large salad (daily)
- 10:00 AM: Insects (Monday, Wednesday, Friday)
Food Preparation Shortcuts
I prep vegetables in bulk every Sunday. Wash, chop, and store different vegetables in separate containers. This makes daily feeding take 2 minutes instead of 15.
For insects, I keep them in proper containers with food and water. Healthy insects mean healthy dragons. I use large plastic storage bins with screen lids and provide cricket food or fresh vegetables for gut-loading.
Hydration Matters Too
Bearded dragons get most water from their food, but I provide shallow water dishes in all enclosures. Some dragons never drink from bowls, others drink daily. Fresh vegetables provide significant hydration — another reason the adult diet works so well.
I mist vegetables lightly before serving, which adds extra moisture and makes them more appealing. Don't mist the dragon directly unless they enjoy it — most find it stressful.
Troubleshooting Common Feeding Problems
"My dragon won't eat vegetables" — Start with colorful options like yellow squash and red bell peppers. Mix tiny amounts of favorite insects into the salad. Be patient — it can take weeks to establish new habits.
"My juvenile seems hungry all the time" — That's normal. Growing dragons have enormous appetites. If they're maintaining good body condition (you can see hip bones but they're not prominent), they're eating correctly.
"My adult dragon begs for insects daily" — Adult dragons often prefer insects but don't need them daily. Stick to your schedule. Extra insects lead to obesity and shortened lifespans.
"Food goes bad before my dragon eats it" — Offer smaller portions more frequently. Remove uneaten food after 4-6 hours to prevent spoilage and bacterial growth.
Seasonal Adjustments and Life Changes
Bearded dragons naturally eat less during brumation (their version of hibernation). Don't panic if your dragon suddenly loses interest in food during cooler months. Continue offering food, but expect decreased appetite.
Pregnant females need extra calcium and slightly more insects. I increase calcium supplementation to daily and add one extra insect feeding per week during egg development.
Elderly dragons (8+ years) may need softer foods and more frequent feeding. I chop vegetables smaller and offer more hornworms and silkworms for easier digestion.
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Frequently Asked Questions
- No, bearded dragons should never eat cooked meat, chicken, or beef. Their digestive systems are designed for insects and plants. Cooked meat is too high in fat and protein, lacks proper nutrients, and can cause serious digestive problems.
- Juveniles can eat crickets daily as part of their 70% insect diet. Adults should only get crickets 2-3 times per week since their diet should be 70% vegetables. Always gut-load crickets 24 hours before feeding and choose appropriately sized ones.
- Yes, especially during seasonal changes or brumation. Adult dragons can safely go 1-2 weeks without eating during brumation. However, juveniles should eat daily, so contact a vet if a young dragon refuses food for more than 2-3 days.
- Yes, but only as occasional treats (once or twice weekly). Fruits like strawberries, blueberries, and melons are high in sugar and should make up less than 5% of their diet. Always remove seeds and cut fruit into appropriate sizes.
- Collard greens, mustard greens, turnip greens, and squash varieties can be fed daily. These provide excellent calcium-to-phosphorus ratios and essential nutrients. Rotate between different safe vegetables to provide variety and prevent nutritional deficiencies.
- Never feed wild-caught insects. They may contain parasites, diseases, or pesticide contamination that can seriously harm or kill your dragon. Always purchase insects from reputable reptile food suppliers and gut-load them properly before feeding.
- Juveniles should eat as many appropriately-sized insects as they can consume in 10-15 minutes, 2-3 times daily, plus vegetables. Adults need a salad roughly the size of their head daily, plus insects 2-3 times weekly. Monitor body weight and adjust portions accordingly.