Hyla cinerea

🔤 Taxonomy

Hyla cinerea is the currently accepted scientific name. In modern North American references and in parts of the hobby, keepers may also encounter the combination Dryophytes cinereus.

English common names used in the hobby:

• Green tree frog
• American green tree frog

German common names used in the hobby:

• Amerikanischer Laubfrosch
• Grüner Laubfrosch

📌 Description

Hyla cinerea is a small, slim arboreal frog from the warm and humid southeastern United States. It is best known for its clear green body color, pale underside, and light stripe that often runs along the side of the body.

Adults usually reach around 3-6 cm. Females are often a little larger and fuller-bodied than males, while males usually have a more visible throat area when mature. With stable husbandry and low chronic stress, captive animals can live roughly 8-12 years.

This is primarily a display species rather than a handling pet. The skin is delicate and permeable, and frequent handling quickly leads to stress, dehydration, and accidental damage. In a secure planted terrarium, however, the species is active, attractive, and rewarding to observe, especially in the evening.

🌍 Distribution

Hyla cinerea is native to the southeastern United States. In the wild it is associated with marshes, pond edges, wet ditches, floodplain vegetation, reeds and shrubs over or near fresh water.

For captive care, the useful lesson from this distribution is:

• stable humidity with fresh airflow rather than stagnant wetness
• leaf litter, roots, plants, or other natural cover at the level the species actually uses
• clean water sources or deposition sites appropriate to the species
• moderate temperatures with night drops where they occur naturally
• a planted enclosure that creates several small microclimates

🌡 Climate across the native range

Monthly climate normals from warm wetland regions in the southeastern United States range:

Weather data by Open-Meteo.com · CC BY 4.0 · Monthly normals calculated by Herpeton Academy from daily archive values.

Location references use GBIF.org occurrence data where available; original occurrence records retain their source dataset licenses.

⚖️ Legal status

As checked against current official sources in April 2026, no current CITES listing was found for Hyla cinerea. No specific EU Wildlife Trade Annex A-D listing was found in the same check.

The species is not relevant to the Bern Convention because it is not native to Europe. Local ownership, collection, transport, import, sale, breeding, and animal-welfare rules may still apply. In some parts of its native range, local rules on wild collection or release may also apply, so captive-bred stock is the safest option.

🤌 Husbandry

Hyla cinerea does best in a tall, well-ventilated terrarium with plenty of vertical structure. It is not demanding in the same way as some poison frogs, but it still needs balance: enough humidity to support healthy skin, enough airflow to prevent stagnant conditions, and enough cover to feel secure.

Small groups are often possible when animals are healthy, similarly sized, and given enough space and visual barriers. Overcrowding should be avoided, especially in simple enclosures with only one favored resting zone near the top.

Useful husbandry priorities include:

• Height and climbing structure rather than floor space alone
• Strong but not drying ventilation
• Clean water and sensible drainage
• Stable moderate temperatures
• Regular feeding on appropriately sized insects

This species is often recommended to beginners, but that only works when the basics are taken seriously. Dirty substrate, overly wet setups, and chronic overheating cause problems quickly.

🧪 Filtration and water

Hyla cinerea does not need an aquarium-style water area, but water management inside the enclosure still matters. A shallow water bowl should always be available and must be changed often because frogs may soak in it or defecate in it.

Misting water should be dechlorinated or otherwise safe for amphibians. If the enclosure is planted and misted regularly, some kind of drainage layer or water-control system is helpful so the lower substrate does not turn sour.

Key points include:

• Replace bowl water frequently
• Avoid permanently waterlogged substrate
• Allow wet surfaces without creating stagnant puddles
• Remove dead feeder insects and waste promptly

These frogs tolerate moisture well, but they do poorly in dirty wet conditions. Skin health depends as much on cleanliness as on humidity.

💡 Lighting

Hyla cinerea benefits from a clear day-night cycle. A normal photoperiod of about 10-12 hours works well for most of the year, with mild seasonal variation if the keeper prefers a more natural rhythm.

Bright plant lighting can be used when the terrarium contains shaded leaves, cork tubes, and higher resting places away from direct glare. These frogs often choose exposed resting sites, but they still need the option to move into dimmer cover.

Low-level UVB can be used cautiously. It is not usually treated as mandatory in the way it is for some reptiles, but gentle UVB across part of the enclosure can be beneficial when the frogs can fully retreat from it.

Night lighting is unnecessary. Constant illumination disrupts their natural rhythm and gives no welfare benefit.

For UV planning, treat this species as Ferguson Zone 1. Aim for about UVI 0.5-1.0 in the upper exposed area, while leaving retreats and a gradient down to shaded areas near zero UVI. This usually points to a low-output UVB tube such as a ShadeDweller-style or 2-7% T5, chosen for the enclosure height; measure with a Solarmeter 6.5 when possible, because reflector, mesh, distance, and lamp age change the real exposure.

🌡 Heating and temperature

This species prefers warm but not extreme temperatures. In most cases, a daytime range of about 24-28°C works well, with a nighttime drop to around 20-23°C.

Suitable approximate ranges:

• Daytime ambient: 24-28°C
• Mild warm spot near upper perches: around 28°C
• Night: 20-23°C

Prolonged overheating is a greater risk than mild nighttime cooling. Temperatures above about 30°C, especially in poorly ventilated enclosures, cause rapid stress, dehydration, and lethargy.

Heating should be gentle and should warm the enclosure without baking the frogs from above. Any heat source must be paired with a thermometer at animal level, not only near the lamp or ceiling of the terrarium.

💧 Humidity and water

General humidity around 50-80% is usually suitable, provided the enclosure is allowed to fluctuate and breathe. These frogs do not need the permanently saturated, near-closed conditions used for many poison frog setups.

Good practice includes:

• One or two moderate mistings per day depending on ventilation
• Drying slightly between heavier sprays
• Constant access to clean dechlorinated water
• Moist resting leaves and branches without stale air

If the enclosure stays bone dry, shedding and hydration problems appear. If it stays dripping wet with no airflow, bacterial and fungal issues become more likely. The best result is a fresh, humid setup rather than a sealed wet box.

🌿 Enclosure and decoration

A tall terrarium is more important than a wide one. For a pair or a small group, many keepers start around 45 x 45 x 60 cm or larger, with additional height and planting being very useful.

The enclosure should include:

• Vertical branches and twigs
• Cork bark and resting tubes
• Broad leaves at different heights
• Dense live plants or robust artificial cover
• Easy-to-clean lower areas and a practical substrate system

Useful plants include pothos, Philodendron, small ficus, and other species that tolerate warmth and regular spraying. Frogs often choose elevated leaves as daytime resting sites, so upper-level cover matters as much as lower-level planting.

A simple naturalistic substrate with leaf litter, moss in selected areas, and a drainage layer often works better than a heavy swamp setup. Good airflow is as important as visual appeal.

🪱 Feeding

Hyla cinerea is insectivorous and should be fed varied live prey of appropriate size. Suitable staples include crickets, small roaches, and similar feeder insects, with occasional variety from moths, flies, or other safe invertebrates where available.

Suitable food items include:

• Small crickets
• Small roach nymphs
• Houseflies or bottle flies
• Occasional waxworms or similar richer feeders only as treats

Juveniles usually do best with near-daily feeding because they are still growing. Adults are often fed every 2-3 days, adjusting the portion size to body condition and activity level.

Supplementation matters. Calcium should be used regularly, and a broader vitamin supplement should be used more sparingly according to the product schedule. Overfeeding is common in tree frogs that are easy to feed, so body condition should be monitored rather than assuming more food is always better.

🩺 Common problems

The most common Hyla cinerea problems in captivity are dehydration, chronic stress from poor cover, obesity from overfeeding, and skin trouble caused by dirty wet conditions. Warning signs include:

• Weight loss or a thin body outline
• Refusal to feed
• Remaining dark in color for long periods
• Repeated poor sheds
• Reddened skin
• Lethargy outside normal daytime resting behavior

Skin infections and red-leg-type bacterial problems are more likely when hygiene is poor and the enclosure remains wet without proper cleaning. Mouth injuries can also happen if prey is too large or if frogs strike repeatedly at hard surfaces during feeding.

New animals should be quarantined before joining an established group. Any frog with persistent skin changes, swelling, prolonged refusal to feed, or abnormal posture should be seen by a veterinarian experienced with amphibians.

📌 Conclusion

Hyla cinerea is an appealing and manageable tree frog when its needs are understood properly. It does not require an especially difficult setup, but it does require consistency: moderate warmth, clean water, good ventilation, reliable humidity, and plenty of elevated plant cover.

For keepers who want an active display amphibian rather than a handling pet, this species is an excellent choice. In a well-planted terrarium with stable routines, it is hardy, attractive, and enjoyable to watch for many years.

📚 Sources and further reading

• CITES Appendices and Species+ trade database, checked April 2026
• EU wildlife trade regulations and annex references, checked April 2026
• GBIF species backbone and occurrence data for taxonomy and distribution context
• IUCN Red List and specialist husbandry references where applicable