Best Foods for Tree Frogs: A Complete Guide to Their Diet

Diet is the single biggest thing you control in a tree frog’s health. In captivity, your frog eats what you offer and nothing else, so getting the menu right really matters.

The good news is that feeding a tree frog is simple once you know the basics. This guide covers what to feed at every life stage, how often, which supplements to use, and the common foods to avoid.

Tree frogs are insectivores. Adults eat live insects like crickets, dubia roaches, and worms, while tadpoles start out on algae and plant matter before shifting to a protein diet.

What Do Tree Frogs Eat?

Adult tree frogs are strict insectivores. They hunt and eat live, moving prey and generally ignore anything that does not move.

Common staple and treat feeders include:

• Crickets (the most common staple)
• Dubia roaches (nutritious and easy to keep)
• Black soldier fly larvae (naturally high in calcium)
• Earthworms and red worms
• Wingless fruit flies (for tiny frogs)
• Hornworms, waxworms, or mealworms (occasional treats only)

The right feeder depends on your frog’s size and age, which we break down below.

How Tree Frogs Eat

Tree frogs catch food with a fast, sticky tongue and swallow prey whole. They do not chew.

Once the insect is in their jaws, they blink hard. Pulling their eyes down into the skull actually helps push the food down the throat, which is why you often see a frog close its eyes as it swallows.

How to Choose the Right Diet

Before you set a menu and schedule, three things decide what your frog needs:

• Age: tadpoles, froglets, and adults eat differently.
• Species: a large White’s tree frog can take bigger prey than a tiny red-eyed.
• Size: never offer prey wider than the space between your frog’s eyes.

That last rule is the most important. Oversized prey is a real choking and impaction risk.

What Do Tree Frog Tadpoles Eat?

Newly hatched tadpoles are herbivores. They graze on algae, moss, duckweed, and soft plant matter, and you can add blanched greens like spinach or broccoli in captivity.

As they grow and start developing back legs, tadpoles become omnivores and need protein. This is when you introduce foods like bloodworms, aphids, and crushed fish flakes.

Feed tadpoles a small amount once a day. If food is left over after a session, you are offering too much.

While their legs develop and the tail shrinks, tadpoles stop eating and live off the nutrients stored in that tail. Once the tail is gone, they are froglets and switch fully to insects.

What Do Baby Tree Frogs (Froglets) Eat?

Once a tadpole finishes metamorphosis, it is an insectivore for life. Froglets do not eat plants or vegetation, only small live insects.

Good froglet foods include pinhead crickets, wingless fruit flies, springtails, gnats, and tiny worms. Keep every item smaller than the frog’s mouth to avoid choking.

Froglets grow fast and have a high metabolism, so they need feeding once or twice every day. Dust their food with supplements to support that rapid growth.

What Do Adult Tree Frogs Eat?

Adult tree frogs eat a rotation of live insects such as crickets, dubia roaches, black soldier fly larvae, earthworms, and the occasional treat worm.

Variety matters. Rotating two or three feeder types gives a better spread of nutrients than crickets alone.

Larger species like the Australian White’s tree frog can occasionally take bigger prey, but insects should still make up the core of the diet for every pet tree frog.

Tree Frog Feeding Schedule by Age

Here is a quick summary of what to feed and how often at each life stage.

Life Stage	Preferred Foods	Amount	Schedule	Diet Type
Early tadpole	Algae, moss, duckweed, blanched greens, tadpole food	Small amount, no leftovers	Once a day	Herbivore
Developing tadpole (legs forming)	Bloodworms, aphids, fish flakes, plus plant matter	Small amount, no leftovers	Once a day	Omnivore
Froglet / baby	Pinhead crickets, fruit flies, springtails, small worms	A few small insects	Once or twice a day	Insectivore
Adult	Crickets, dubia roaches, BSF larvae, earthworms	2 to 3 insects	2 to 3 times a week	Insectivore

Adults eat far less often than babies. Overfeeding an adult is a common cause of obesity, so stick to a couple of feedings a week.

How to Feed Your Tree Frog

Tree frogs are nocturnal, so the best time to feed is in the evening when they naturally wake up to hunt. Food offered in the morning is often ignored.

There are three common ways to offer live insects:

• Free-ranging: release the insects into the tank and let your frog hunt. This is the most natural method, but count how many you add so you can track what gets eaten.
• Cup feeding: place feeders in a shallow, escape-proof dish. This is handy for worms that would otherwise burrow into the substrate.
• Tong feeding: offer softer feeders like worms by hand using soft-tipped tongs. It is good for portion control and for frogs that are comfortable being close to you.

Whatever method you use, remove any insects your frog does not eat within an hour or two. This matters more than it sounds: uneaten crickets will nibble on a sleeping frog overnight and cause stress or even injury.

For portion size, feed until your frog has a gently rounded belly, not a bloated or bulging one. Signs of an overweight tree frog include fatty bulges over the limbs and sides that make it look puffy even at rest. If you notice that, cut back how often you feed.

Gut-Loading and Feeder Insects

A feeder insect is only as nutritious as what it has eaten. Gut-loading means feeding your insects a healthy diet of vegetables and commercial gut-load for 24 to 48 hours before they go to your frog.

Always buy feeders from a trusted pet store or breeder. Wild-caught insects can carry pesticides and parasites that make your frog sick, so avoid them.

Not every insect belongs in the regular rotation. Use this quick reference to build a balanced feeder list.

Feeder	How Often	Notes
Crickets	Staple	Easy and well accepted, gut-load and dust
Dubia roaches	Staple	High protein, soft, easy to digest
Black soldier fly larvae	Staple	Naturally high in calcium
Earthworms and red worms	Regular	Nutritious and add good variety
Hornworms	Occasional	Hydrating treat, grow large quickly
Waxworms	Occasional treat	Fatty, use sparingly
Mealworms and superworms	Occasional treat	Hard shell is tough to digest
Wild-caught insects	Avoid	Pesticide and parasite risk

Do Tree Frogs Need Calcium and Vitamin Supplements?

Yes. Captive tree frogs cannot get the full range of nutrients they would find in the wild, so supplements are essential.

Without enough calcium, a tree frog can develop metabolic bone disease, a serious and often fatal condition. To prevent it, lightly dust feeder insects before each meal.

A simple supplement routine looks like this:

• Calcium with vitamin D3 at most feedings (for example Repashy Calcium Plus or Rep-Cal Calcium with D3).
• A multivitamin (I suggest this one) once or twice a week (such as Rep-Cal Herptivite or Repashy Vitamin A Plus).

Do not dust every single feeder with everything. Over-supplementing, especially with vitamin A and D3, can be just as harmful as too little.

Foods to Avoid

Because adult tree frogs are insectivores, several common foods should never be offered. Avoid the following:

• Fruit, vegetables, and plant matter (adult frogs cannot digest them).
• Wild-caught insects (pesticide and parasite risk).
• Processed pet food made for other animals.
• Prey larger than the frog’s mouth, which can choke or impact it.
• Human food of any kind.

Mealworms and superworms are also best kept as occasional treats. Their hard exoskeleton is tough to digest, so use soft, freshly molted ones if you offer them at all.

Do Tree Frogs Need Water?

Tree frogs do not drink from a bowl the way a mammal does. They absorb water through their skin and lick droplets off plants and glass.

Even so, always provide a shallow dish of clean, dechlorinated water. Never use untreated tap water, as the chlorine can harm your frog.

Regular misting keeps humidity up and gives your frog the droplets it uses to stay hydrated.

Do You Need to Feed Tree Frogs Differently in Winter?

This is where a lot of bad advice circulates, so it is worth being clear.

Popular pet tree frogs such as White’s, red-eyed, and Amazon milk frogs are tropical species. When you keep them at their normal temperatures, they do not hibernate and should be fed on their regular schedule all year.

Only wild temperate species, like the North American gray tree frog, brumate outdoors when it gets cold. You should not try to force your captive tropical frog into hibernation or overfeed it to “fatten up” for winter.

If your indoor frog suddenly slows down or stops eating in winter, check the tank temperature first rather than assuming it is hibernating. For more on the wild side of this, see our guide on whether tree frogs hibernate.

Why Won’t My Tree Frog Eat?

A tree frog that refuses food is usually telling you something is off. The three most common causes are stress, incorrect conditions, and illness.

Run through this quick checklist:

• Temperature and humidity: if the tank is too cold, digestion and appetite drop.
• Stress: a new home, too much handling, or heavy foot traffic can put a frog off food.
• Live prey: frogs often ignore dead or motionless insects, so make sure the food is moving.
• Illness: if conditions are correct and it still will not eat, look for signs of sickness.

Try leaving the room after offering food, or cover the tank for a while, so a shy frog feels safe enough to hunt. If it keeps refusing, read our guide on how to treat a sick tree frog.

Species-Specific Diets

What do green tree frogs eat?

Green tree frogs are not picky. They eat crickets, flies, moths, ants, grasshoppers, worms, and slugs, along with most insects that fit in their mouths.

The larger Australian green tree frog can also take bigger prey like the occasional small mouse, though insects should stay the staple.

What do brown tree frogs eat?

Brown tree frogs are agile hunters that snatch airborne prey in mid-leap. Their diet includes mosquitoes, flies, moths, crickets, grasshoppers, beetles, and other flying insects.

If you are still learning to tell species apart, our tree frog identification guide can help.

Frequently Asked Questions

How long can a tree frog go without eating?

A healthy adult can survive a couple of weeks without food if needed, but this is not something to aim for. Tadpoles and froglets need regular daily feeding and cannot go long without eating.

Do tree frogs eat dead insects?

Rarely. Tree frogs hunt by movement and usually ignore dead or still insects, which is why live feeders are the standard.

Can tree frogs eat fruit or vegetables?

No. Adult tree frogs are insectivores and cannot digest fruit, vegetables, or plant matter. Only tadpoles eat plant-based foods.

Can tree frogs eat grasshoppers?

Yes, appropriately sized grasshoppers are a good, protein-rich feeder. Just gut-load them first and never use wild-caught ones.

Can green tree frogs eat mealworms?

Only occasionally. Mealworms have a hard exoskeleton that is difficult to digest and low nutritional value, so use freshly molted, soft ones and do not make them a staple.

Can tree frogs eat superworms or waxworms?

Yes, but only as occasional treats. Both are high in fat, and superworms have a tough exoskeleton, so they should supplement a staple diet of crickets and roaches rather than replace it.

What do tree frogs eat in the wild?

In the wild, tree frogs eat a wide range of live insects and small invertebrates, including moths, flies, mosquitoes, crickets, grasshoppers, beetles, ants, and spiders. Larger species occasionally take small prey like tiny lizards, but insects make up the bulk of every tree frog’s natural diet.

Final Thoughts

Feeding a tree frog well comes down to a few habits. Offer correctly sized live insects, rotate the feeders, gut-load and dust them with supplements, and match the amount to your frog’s age.

Watch your frog at feeding time. A frog with a healthy appetite and a rounded but not bloated body is usually a well-fed, happy frog. If eating habits suddenly change, treat it as an early warning and check your setup.