Emerald Tree Boa — Care Sheet & Morphs

Husbandry requirements

Emerald Tree Boa — origin: Northern South America — the Guiana Shield: Guyana, Suriname, French Guiana, Venezuela, northern Brazil and Colombia. Not to be confused with Corallus batesii, the Amazon Basin form..

Terrarium temperature gradient

Night min22 °C

Cool side24–26 °C

Warm side28–30 °C

A canopy snake very sensitive to overheating: do NOT exceed ~31-32 °C. No true hot spot or basking lamp (a nocturnal forest species) — favour gentle ambient warmth and a gradient. The nocturnal drop to 22-24 °C is beneficial.

Enclosure (adult)

90 × 60 × 90 cm

Vertical arboreal terrarium, well ventilated

Height is the priority. Install several horizontal perches (sturdy branches) at different levels and temperatures. A volume of 120x60x120 cm or more is recommended for a large adult. Good ventilation is essential to avoid stagnant air.

Humidity

60–90 %

Cycle the humidity: ~80-90% at night and after misting, letting it fall back to 60-70% during the day. Combine high humidity with good ventilation; stagnant, humid air promotes respiratory infections.

Substrate

Cypress mulchCoconut fibre or barkSphagnum moss

A substrate that retains moisture but drains well. Watch for mould and stagnant humidity; renew regularly.

UVB

Optional

Not essential (nocturnal species). A low-intensity UVB (T5 tube ~5%, Ferguson zone 1) can be beneficial if provided with accessible shaded areas.

Water source

Always available

A large bowl of clean water renewed regularly. The animal drinks mainly the droplets deposited on its body and the branches after spraying; mist regularly to maintain hydration and humidity.

Origin

Boidae

Northern South America — the Guiana Shield: Guyana, Suriname, French Guiana, Venezuela, northern Brazil and Colombia. Not to be confused with Corallus batesii, the Amazon Basin form.

Feeding & health

Diet

Carnivore — Rodents (mice, young rat sized to the snake's girth)

A reactive feeder: feed with tongs, at night, using thawed prey. Moderate, spaced-out meals (slow metabolism) to avoid obesity and regurgitation. Listed under CITES Appendix II (EU Annex B): proof of origin required; favour captive-bred (CBB) individuals, as wild-caught animals are fragile and often parasitised.

Breeding

Viviparous

Gestation of about 6-7 months; sexual maturity around 3-4 years. A slight seasonal cooling stimulates breeding. The newborns (red/orange) require high humidity and are prone to dehydration.

Health watch points

Respiratory infections (insufficient ventilation, stagnant humidity, temperatures too low)
Regurgitation (handling after a meal, unsuitable temperatures or prey too large)
Dehydration and difficult shedding (dysecdysis) when humidity is insufficient
Internal parasites, especially in wild-caught animals (nematodes, protozoa)
Thermal stress / hyperthermia: overheating can be rapidly fatal

Morphs & genetics

Registry of 2 documented genes for Emerald Tree Boa.

Melanistic (Hypothetical/Rare) blackRec
Anerythristic (Blue?)Rec

Pairing calculator

Pick each parent's genotype — clutch probabilities update live. Free, no sign-up.

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Emerald Tree Boa × Emerald Tree Boa

Probabilities per gene (independent loci).

Expected clutchSelect at least one gene on a parent.

Frequently asked questions

Answers to the most common questions about keeping the emerald tree boa.

How big does an adult Emerald Tree Boa get?▾

Adults measure between 150 and 180 cm, with a more slender build and slightly smaller size than the Amazon Basin emerald tree boa (Corallus batesii), which it should not be confused with. Hatchlings are born red or orange and turn their characteristic emerald green between 6 and 12 months of age, developing their impressively large front teeth along the way.

What kind of terrarium does it need?▾

Provide a well-ventilated, vertical arboreal terrarium measuring at least 90 x 60 x 90 cm for an adult - height matters more than floor space. Install several sturdy horizontal perches at different heights and temperatures; for a large adult, a volume of 120 x 60 x 120 cm or more is recommended.

How do you manage temperature without risking overheating?▾

This canopy-dwelling snake is extremely sensitive to excess heat: never exceed around 31-32°C. It doesn't need a true hot spot or basking lamp - gentle ambient warmth (28-30°C on the warm side, 24-26°C on the cool side) combined with a gradient is enough, with a beneficial nighttime drop to around 22-24°C.

What humidity level and substrate should you use?▾

Cycle the humidity between 80 and 90% at night and after misting, letting it drop back to 60-70% during the day. Cypress mulch, coconut fibre or bark, and sphagnum moss all work well, provided you watch for mould: combining high humidity with stagnant air encourages respiratory infections.

What should you feed this boa and how often?▾

It's a reactive feeder best fed with tongs at night, on appropriately sized thawed rodents (mice, young rats) matched to its body girth. Because its metabolism is slow, meals should stay moderate and well spaced to prevent obesity and regurgitation.

How does the Emerald Tree Boa stay hydrated?▾

It has access to a large bowl of clean water that's changed regularly, but it drinks mainly the droplets left on its body and the branches after misting. Mist regularly to cover both hydration and ambient humidity needs.

Is this snake dangerous or easy to handle?▾

It isn't venomous, but it has a reputation for being defensive and 'nippy,' with very large front teeth capable of inflicting a memorable bite. Wild-caught individuals are especially irritable and difficult to acclimatise; even captive-bred animals remain reactive feeders, and handling should be kept to the strict minimum.

Where does this boa come from, and can it be freely acquired?▾

It's native to the Guiana Shield (Guyana, Suriname, French Guiana, Venezuela, and northern Brazil and Colombia). The species is listed under CITES Appendix II (Annex B in the EU), which requires proof of origin; captive-bred individuals are strongly preferred, since wild-caught animals tend to be fragile and often carry parasites.

Is this species suitable for a beginner keeper?▾

No, it's classed as advanced. Its defensive temperament, precise thermal requirements (with a real risk of overheating), and need for a carefully managed arboreal setup make it a boa best left to already experienced keepers.

How long does an Emerald Tree Boa live?▾

Its lifespan is 15 to 20 years in captivity, sometimes more with optimal care - a long-term commitment to plan for.

How does it reproduce?▾

It's ovoviviparous: gestation lasts about 6 to 7 months, and sexual maturity is reached around 3-4 years. A slight seasonal cooling stimulates breeding, and the red or orange newborns need high humidity since they're prone to dehydration.

What are the main health risks?▾

Watch for respiratory infections linked to poor ventilation or stagnant humidity, as well as regurgitation after handling or overly large prey. Dehydration and difficult sheds are a risk when humidity is insufficient, wild-caught animals often carry internal parasites, and hyperthermia can quickly prove fatal.

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