Staple most days Occasional rotate in Rarely small amounts, seldom Never do not feed
Most checked
Bearded dragon · 75 foods · Verdicts are for healthy adult dragons; young dragons eat more insects.
Greens
Dark leafy greens are the base of an adult dragon’s plant diet. UC Davis says they should make up the great majority of the salad.

Yes, every day. Collard greens are one of the best staple greens, with 232 mg of calcium to just 25 mg of phosphorus per 100 g, and UC Davis lists collards among the dark greens that should make up most of the salad.
Ca:P 9.3 : 1Ca 232 · P 25 mgStapleYes, every day. Turnip greens are a good staple green, with 190 mg of calcium to 42 mg of phosphorus per 100 g.
Ca:P 4.5 : 1Ca 190 · P 42 mgStapleYes, as part of a mixed salad. Mustard greens are a suitable staple, but their ratio of 115 mg calcium to 58 mg phosphorus is lower than collards, so mix them with other greens.
Ca:P 2.0 : 1Ca 115 · P 58 mgStaple
Yes. Dandelion leaves are a good staple green with 187 mg of calcium per 100 g; feed them only from plants that have not been sprayed with weedkiller or grown beside roads.
Ca:P 2.8 : 1Ca 187 · P 66 mgStapleYes. UC Davis lists endive and escarole among the dark leafy greens that can form most of the daily salad; endive has 52 mg of calcium to 28 mg of phosphorus per 100 g.
Ca:P 1.9 : 1Ca 52 · P 28 mgStapleYes. Watercress is on UC Davis’s list of greens for the daily salad, with 120 mg of calcium to 60 mg of phosphorus per 100 g.
Ca:P 2.0 : 1Ca 120 · P 60 mgStapleYes. UC Davis includes grape leaves with the dark leafy greens for the daily salad; use leaves from vines that have not been sprayed.
Ca:P —StapleYes. VCA lists alfalfa among the leafy plant foods that can form the base of the plant diet.
Ca:P —StapleYes, in rotation. VCA lists bok choy among suitable vegetables and it has 105 mg of calcium to 37 mg of phosphorus per 100 g, but as a cabbage-family green it is best mixed with others rather than fed alone.
Ca:P 2.8 : 1Ca 105 · P 37 mgOccasionalYes, in rotation rather than every day. Kale is high in calcium (254 mg to 55 mg of phosphorus per 100 g), but UC Davis advises feeding it sparingly and it is one of the brassicas whose glucosinolates are tracked in USDA’s review, so keep it as one green among several.
Ca:P 4.6 : 1Ca 254 · P 55 mgOccasionalOccasionally. UC Davis lists cabbage among foods to feed sparingly, it contains glucosinolates (USDA review), and with 40 mg of calcium per 100 g it adds far less than dark greens.
Ca:P 1.5 : 1Ca 40 · P 26 mgOccasionalOccasionally. Parsley has a good ratio of 138 mg calcium to 58 mg phosphorus, but UC Davis and NC State list it among goitrogen-rich foods to feed sparingly.
Ca:P 2.4 : 1Ca 138 · P 58 mgOccasionalYes, as one green among several. VCA lists cilantro as a suitable vegetable; its ratio of 67 mg calcium to 48 mg phosphorus is lower than the best staple greens.
Ca:P 1.4 : 1Ca 67 · P 48 mgOccasionalYes, in small amounts. Romaine is safe and UC Davis lists it for herbivorous reptiles, but with 33 mg of calcium to 30 mg of phosphorus per 100 g it is far less nutritious than collard or turnip greens.
Ca:P 1.1 : 1Ca 33 · P 30 mgOccasionalOnly rarely. Spinach is one of the highest-oxalate foods (a 2023 review reports 330–2,350 mg per 100 g), and oxalate binds calcium so the dragon cannot absorb it, whatever the ratio looks like on paper.
Ca:P 2.0 : 1Ca 99 · P 49 mgRarelyOnly rarely. Swiss chard is high in oxalates, which bind calcium and stop it being absorbed (VCA, UC Davis), and its ratio is barely above 1 : 1.
Ca:P 1.1 : 1Ca 51 · P 46 mgRarelyOnly rarely. VCA groups beet greens with spinach and Swiss chard as oxalate-rich greens to use sparingly.
Ca:P —RarelyRarely. Iceberg lettuce is not harmful in a small amount, but it is about 96% water with only 18 mg of calcium per 100 g, so it adds little and should never replace dark greens.
Ca:P 0.9 : 1Ca 18 · P 20 mgRarelyVegetables
Other vegetables add variety in smaller amounts. Grate or chop them finely.
Yes, as part of the vegetable portion. Serve it grated or finely chopped; butternut squash has 48 mg of calcium to 33 mg of phosphorus per 100 g, and UC Davis lists it among good mixed vegetables.
Ca:P 1.5 : 1Ca 48 · P 33 mgOccasionalYes. UC Davis lists acorn squash among the mixed vegetables to add to the salad; serve it grated or finely chopped.
Ca:P —OccasionalYes, occasionally. UC Davis includes pumpkin in the mixed vegetables, but it has about twice as much phosphorus as calcium, so keep portions small.
Ca:P 0.5 : 1Ca 21 · P 44 mgOccasionalYes, occasionally and cooked. VCA lists cooked sweet potato as an occasional vegetable; raw sweet potato has 30 mg of calcium to 47 mg of phosphorus per 100 g.
Ca:P 0.6 : 1Ca 30 · P 47 mg (raw)OccasionalYes, grated and in small amounts. Carrots are fine as an occasional vegetable alongside greens, with roughly equal calcium and phosphorus (33 mg and 35 mg per 100 g).
Ca:P 0.9 : 1Ca 33 · P 35 mgOccasionalYes, finely chopped and in small amounts. UC Davis lists bell peppers among mixed vegetables, but red bell pepper has only 7 mg of calcium per 100 g, so it adds variety rather than calcium.
Ca:P 0.3 : 1Ca 7 · P 26 mg (red)OccasionalYes, chopped, as an occasional vegetable. UC Davis and VCA both list green beans; they have about equal calcium and phosphorus (37 mg and 38 mg per 100 g).
Ca:P 1.0 : 1Ca 37 · P 38 mgOccasionalYes, occasionally. VCA lists okra among occasional vegetables, and it has a little more calcium (82 mg) than phosphorus (61 mg) per 100 g.
Ca:P 1.3 : 1Ca 82 · P 61 mgOccasionalYes, occasionally and chopped small. VCA lists asparagus among occasional vegetables, but it has more than twice as much phosphorus as calcium.
Ca:P 0.5 : 1Ca 24 · P 52 mgOccasionalYes, occasionally, with every spine removed. VCA lists cactus among occasional vegetables, and cooked nopales have 164 mg of calcium to 16 mg of phosphorus per 100 g.
Ca:P 10.2 : 1Ca 164 · P 16 mg (cooked)OccasionalYes, but rarely and in small amounts. Peas appear on UC Davis’s vegetable list, but with 108 mg of phosphorus to 25 mg of calcium per 100 g they pull the diet’s ratio down.
Ca:P 0.2 : 1Ca 25 · P 108 mgRarelyOnly rarely. UC Davis and NC State list broccoli among goitrogen-rich foods to feed sparingly, and it has more phosphorus (66 mg) than calcium (47 mg) per 100 g.
Ca:P 0.7 : 1Ca 47 · P 66 mgRarelyRarely. UC Davis groups zucchini with low-nutrition vegetables to feed sparingly; it has 16 mg of calcium to 38 mg of phosphorus per 100 g.
Ca:P 0.4 : 1Ca 16 · P 38 mgRarelyRarely. Cucumber is mostly water, and UC Davis lists it among low-nutrition vegetables to offer only sparingly.
Ca:P 0.7 : 1Ca 16 · P 24 mgRarelyRarely. UC Davis lists radishes among low-nutrition vegetables to feed sparingly.
Ca:P 1.2 : 1Ca 25 · P 20 mgRarelyRarely, if at all. Corn appears on VCA’s occasional list, but sweet corn has just 2 mg of calcium to 89 mg of phosphorus per 100 g, one of the worst ratios on this page, and UC Davis counts it as low-nutrition.
Ca:P 0.0 : 1Ca 2 · P 89 mgRarelyRarely, if at all. VCA lists mushrooms among occasional vegetables, but white mushrooms have 3 mg of calcium to 86 mg of phosphorus per 100 g.
Ca:P 0.0 : 1Ca 3 · P 86 mg (white)RarelyFruit
Fruit is a treat only: about 5% of a herbivorous reptile’s diet (UC Davis) and 10–20% of the plant food at most (VCA). Most fruit has more phosphorus than calcium.

Yes, as an occasional treat. Strawberries are high in sugar and low in calcium, with 4.9 g of sugar and more phosphorus (24 mg) than calcium (16 mg) per 100 g, so offer a small piece now and then. Full answer →
Ca:P 0.7 : 1Ca 16 · P 24 mgOccasionalYes, as an occasional treat. Raspberries have 25 mg of calcium to 29 mg of phosphorus per 100 g.
Ca:P 0.9 : 1Ca 25 · P 29 mgOccasionalYes, as an occasional treat. Blackberries are among the better berries, with slightly more calcium (29 mg) than phosphorus (22 mg) and under 5 g of sugar per 100 g.
Ca:P 1.3 : 1Ca 29 · P 22 mgOccasionalYes, as a treat. Papaya is one of the better fruits for calcium balance (20 mg calcium to 10 mg phosphorus per 100 g), but it is still sugary.
Ca:P 2.0 : 1Ca 20 · P 10 mgOccasionalYes, as an occasional treat. UC Davis lists cantaloupe among treat fruits; it has 7.9 g of sugar and more phosphorus than calcium per 100 g.
Ca:P 0.6 : 1Ca 9 · P 15 mgOccasionalYes, as an occasional treat without the seeds. VCA lists melon among treat fruits; watermelon is mostly water and sugar, with 7 mg of calcium per 100 g.
Ca:P 0.6 : 1Ca 7 · P 11 mgOccasionalYes, as an occasional treat. VCA lists kiwi among treat fruits, and it has equal calcium and phosphorus (34 mg each per 100 g).
Ca:P 1.0 : 1Ca 34 · P 34 mgOccasionalYes, as an occasional treat with the pit removed. UC Davis and VCA list apricots among treat fruits; they have 13 mg of calcium to 23 mg of phosphorus per 100 g.
Ca:P 0.6 : 1Ca 13 · P 23 mgOccasionalRarely. A few blueberries make a treat, but at nearly 10 g of sugar per 100 g and twice as much phosphorus as calcium they should stay rare.
Ca:P 0.5 : 1Ca 6 · P 12 mgRarelyYes, but rarely. Apple is on the treat lists from UC Davis and VCA, but with 10.4 g of sugar per 100 g and almost twice as much phosphorus as calcium, offer only a small piece with no seeds.
Ca:P 0.5 : 1Ca 6 · P 11 mgRarelyRarely. Banana is listed as a treat fruit (UC Davis, VCA), but it has 12.2 g of sugar and more than four times as much phosphorus as calcium per 100 g.
Ca:P 0.2 : 1Ca 5 · P 22 mgRarelyRarely, cut into small pieces. Grapes are on the treat lists from UC Davis and VCA, but they have 15.5 g of sugar per 100 g, more than any other fresh fruit here except figs.
Ca:P 0.5 : 1Ca 10 · P 20 mgRarelyRarely. Mango is listed as a treat fruit (UC Davis, VCA), but at 13.7 g of sugar per 100 g it should be a small, infrequent piece.
Ca:P 0.8 : 1Ca 11 · P 14 mgRarelyRarely. Pears are on the treat lists from UC Davis and VCA; with 9.8 g of sugar per 100 g, offer a small seedless piece only now and then.
Ca:P 0.8 : 1Ca 9 · P 12 mgRarelyRarely, with the pit removed. Peaches are listed as a treat fruit, but they have more than three times as much phosphorus as calcium.
Ca:P 0.3 : 1Ca 6 · P 20 mg (yellow)RarelyRarely, with the pit removed. UC Davis lists plums among treat fruits; they have 9.9 g of sugar and little calcium per 100 g.
Ca:P 0.4 : 1Ca 6 · P 16 mgRarelyRarely. Fresh figs have a good calcium ratio (35 mg to 14 mg of phosphorus per 100 g), but at 16.3 g of sugar per 100 g they are among the sweetest fruits here.
Ca:P 2.5 : 1Ca 35 · P 14 mg (fresh)RarelyRarely. UC Davis and NC State list oranges among treat fruits, and oranges have more calcium than phosphorus, but they are sugary, so a small piece on rare occasions is the limit.
Ca:P 2.9 : 1Ca 40 · P 14 mg (orange)RarelyRarely. Tomato is on the treat lists from UC Davis and VCA, but it has more than twice as much phosphorus as calcium.
Ca:P 0.4 : 1Ca 10 · P 24 mgRarelyRarely, if at all. VCA lists star fruit among treat fruits, but a 2023 food-chemistry review names it as one of the few high-oxalate fruits, so other fruits are better choices.
Ca:P —RarelyInsects and feeders
Feed live insects small enough to swallow easily; UC Davis warns that insects too large for the dragon can cause serious health problems. Gut-load them and dust them with calcium (VCA, UC Davis).

Yes. Dubia roaches are a standard staple feeder for bearded dragons of all ages; size them to the dragon, gut-load them and dust them with calcium.
Ca:P —Staple
Yes. Gut-loaded, calcium-dusted crickets are a staple feeder (VCA, UC Davis); remove any that are not eaten so they do not bother the dragon.
Ca:P —Staple
Yes. VCA lists silkworms as a suitable feeder, and they add variety to a cricket or roach diet.
Ca:P —Staple
Yes. VCA lists hornworms as a suitable feeder; buy them as feeders rather than collecting them from garden plants.
Ca:P —Staple
Yes, as one feeder among several. UC Davis and VCA both list mealworms; use them alongside crickets or roaches rather than as the only insect.
Ca:P —Occasional
Only as an occasional extra. VCA notes superworms are high in fat and can cause obesity, and a 2022 study measured about 65 mg of calcium to 651 mg of phosphorus per 100 g of superworm larval meal.
Ca:P —RarelyRarely, as a treat. VCA says waxworms are high in fat and should be fed sparingly, not daily.
Ca:P —RarelyRarely, and only for large adults. VCA allows pinkie or fuzzy mice occasionally for larger dragons, and UC Davis says no more than once a week for dragons over four months old.
Ca:P —RarelyFlowers
Only feed flowers you know have never been sprayed with pesticide or weedkiller.
Yes. UC Davis lists dandelion greens and flowers among the core salad foods; pick them only where no weedkiller is used.
Ca:P —StapleYes, occasionally. Both UC Davis and VCA list hibiscus flowers; use only blooms that have never been sprayed.
Ca:P —OccasionalYes, occasionally. UC Davis lists rose petals and VCA lists roses; florist roses are usually treated, so use only home-grown, unsprayed flowers.
Ca:P —OccasionalYes, occasionally. VCA lists nasturtiums among flowers bearded dragons can eat, if they are free of chemicals.
Ca:P —OccasionalYes, occasionally. UC Davis lists pansies and violets among flowers to offer sparingly.
Ca:P —OccasionalYes, occasionally. Both UC Davis and VCA list geranium flowers, provided they have not been sprayed.
Ca:P —OccasionalNever feed
These foods are toxic or have no safe place in a bearded dragon’s diet.

No, never. Fireflies contain lucibufagins, toxins that act on the heart; the University of Illinois veterinary college warns that eating even one can kill a bearded dragon, and VCA says they are toxic to lizards.
Ca:P —NeverNo. Avocado contains persin, which the Merck Veterinary Manual links to heart damage in many birds and mammals; reptiles have not been studied, so there is no reason to risk it, and it has four times more phosphorus than calcium.
Ca:P 0.2 : 1Ca 12 · P 52 mgNeverNo. Rhubarb is one of the highest-oxalate foods known (about 1,235 mg per 100 g in a 2023 review), and oxalate locks up calcium, so its high calcium figure is misleading.
Ca:P 6.1 : 1Ca 86 · P 14 mgNeverNo. Onions and garlic contain sulfur compounds that damage red blood cells in many animals (Merck Veterinary Manual); there is no reptile safety data and they offer nothing a dragon needs.
Ca:P 0.8 : 1Ca 23 · P 29 mg (onion)Never
No. Every part of pothos contains calcium oxalate crystals that irritate the mouth and gut (NC State Extension), so keep it out of reach and out of the enclosure.
Ca:P —NeverNo. Do not feed wild plants or flowers unless you are sure what they are and that they have not been treated with pesticide.
Ca:P —NeverNo food on this list matches that search. If you are unsure about a food, leave it out and stick to the staple greens and feeders above.
Ca:P = calcium-to-phosphorus ratio, per 100 g raw unless marked, from USDA FoodData Central (SR Legacy). Ratios calculated by us and rounded to one decimal place; red means more phosphorus than calcium. A dash means USDA has no matching entry, and the verdict rests on the vet sources alone.
How to read this
This is general guidance for healthy adult bearded dragons, not a diet plan for an individual animal. Young dragons need far more insects than adults, and a dragon with a health problem may need a different diet from its vet. UC Davis’s feeding guide gives a broad target of about 60% plant and 40% animal food for omnivorous lizards such as bearded dragons; VCA says about half and half, shifting toward plants with age.
The calcium-to-phosphorus ratio matters because phosphorus competes with calcium. Merck Veterinary Manual says the ratio of a reptile’s food should be at least 1 : 1, with 2 : 1 preferred. Dark greens push the ratio up; most fruit and insects pull it down, which is why insects are dusted with calcium. A good ratio does not help if a food is high in oxalate, which binds the calcium. The full feeding schedule is in our bearded dragon care guide, and the reasoning behind each food group is in what can bearded dragons eat.
Keep reading
Related tools
All toolsSources
- UC Davis School of Veterinary Medicine — Bearded dragon care
- UC Davis School of Veterinary Medicine — Nutrition for herbivorous reptiles
- UC Davis California Veterinary Emergency Team — Avian, small mammal and exotics care and feeding guide (January 2025)
- VCA Animal Hospitals — Bearded dragons: feeding
- NC State College of Veterinary Medicine — Caring for your pet bearded dragon
- University of Illinois College of Veterinary Medicine — Lightning bugs toxic to reptiles
- Zhu et al. (2024), Firefly toxin lucibufagins evolved after the origin of bioluminescence, PNAS Nexus
- Salgado et al. (2023), Oxalate in foods: extraction conditions, analytical methods, occurrence, and health implications, Foods 12(17):3201
- Wu & Pehrsson (2021), Current knowledge and challenges on the development of a dietary glucosinolate database in the United States, Current Developments in Nutrition
- Dragojlović et al. (2022), Comparison of nutritional profiles of super worm and yellow mealworm, Animals 12(10):1277
- Merck Veterinary Manual — Avocado (Persea spp) toxicosis in animals
- Merck Veterinary Manual — Garlic and onion (Allium spp) toxicosis in animals
- Merck Veterinary Manual — Nutrition in reptiles
- NC State Extension Plant Toolbox — Epipremnum aureum (pothos)
- USDA FoodData Central (SR Legacy), calcium and phosphorus per 100 g: collard greens 170406 · turnip greens 170061 · mustard greens 169256 · dandelion greens 169226 · endive and escarole 168412 · watercress 170068 · bok choy 170390 · kale 168421 · cabbage 169975 · parsley 170416 · cilantro 169997 · romaine lettuce 169247 · spinach 168462 · swiss chard 169991 · iceberg lettuce 169248 · butternut squash 169295 · pumpkin 168448 · sweet potato 168482 · carrots 170393 · bell pepper 170108 · green beans 169961 · okra 169260 · asparagus 168389 · prickly pear cactus pad 169388 · peas 170419 · broccoli 170379 · zucchini 169291 · cucumber 168409 · radishes 169276 · corn 169998 · mushrooms 169251 · strawberries 167762 · raspberries 167755 · blackberries 173946 · papaya 169926 · cantaloupe 169092 · watermelon 167765 · kiwi 168153 · apricots 171697 · blueberries 171711 · apples 171688 · bananas 173944 · grapes 174683 · mango 169910 · pears 169118 · peaches 169928 · plums 169949 · figs 173021 · oranges and citrus 169097 · tomato 170457 · avocado 171705 · rhubarb 167758 · onion and garlic 170000
Verdicts written by us from the veterinary sources above; nutrient values from USDA FoodData Central. Data updated October 2026 · How we build these pages · Data sources



