Green tree python

Best for an observant keeper

Keep one green tree python in a furnished, ventilated enclosure with long horizontal branch routes, leafy cover and accessible drinking water. Choose this animal for observation and careful routine care rather than frequent handling. Record its documented identity and lineage: the keeper label includes Morelia viridis and Morelia azurea, while older sources often use viridis for both. Juvenile color alone does not reliably establish the complete identity.

References: [4] [1] [5]

Build choices into the branches

Our recommended minimum for one adult up to 6′ (183 cm) total length is 6′ × 3′ × 3′ (183 × 91 × 91 cm), length × depth × height, measured internally. We prefer 6′ × 3′ × 4′ (183 × 91 × 122 cm) where all levels can be connected and water remains easy to reach. These are our editorial welfare recommendations, not experimentally validated dimensions.

The full-length horizontal route follows the specialist’s stated extension principle. Our depth and height give multiple perch choices and turning space beyond its smaller fixed enclosure example. For a longer individual, keep length at least equal to total length including the tail, and depth and height at least half that length as our editorial scaling rule. For example, a 7′ (213 cm) snake needs at least 7′ × 42″ × 42″ (213 × 107 × 107 cm); prefer 4′ (122 cm) height. This is a conditional example, not a claim that seven feet is a normal adult size.

The baseline floor is 18 sq ft (1.67 m²). Provide connected horizontal branches, concealed warm and cool rests, and a route to the floor. Include a low hunting perch within about ≈ 11.811″ (30 cm) of the floor. Removable branches let a coiled animal remain supported during essential transfers. Fit a securely supported drinking bowl near a favored perch if the animal does not readily descend to water.

Use approximately ≈ 1.969″–3.937″ (5–10 cm) of clean soil- or coconut-based bedding to buffer moisture. The stated height includes bedding: a ≈ 3.937″ (10 cm) bed leaves about ≈ 31.89″ (81 cm) above it in the minimum enclosure, before lamp clearance. Paper can be useful during observation. Maintain dry exposed resting surfaces, ventilation, guarded heat and a separate moist refuge or sheltered humid area. A planted appearance or matching dimensions alone does not establish suitability.

References: [1] [5] [2]

Measure the occupied perch

Start an established adult with a basking perch around 81–86°F (27–30°C), shaded cooler air around 70–79°F (21–26°C), and a night decline around 68–72°F (20–22°C). Secure a digital probe at the occupied basking branch and another in shaded resting air; use an infrared thermometer to check individual surfaces. Do not treat the perch reading as a whole-enclosure thermostat setting. Control and guard heaters so the snake cannot contact them.

For newly acquired young animals, retain the documented breeder routine during settling and avoid imposing the lowest adult nighttime value. Our starting choice is a 70–72°F (21–22°C) night floor, reflecting the warmer floor in the species breeder account, with sheltered daytime choices toward the upper part of the cool range. Review hydration and digestion rather than assuming every locality or age needs identical conditions.

Provide approximately 12 hours of daytime light and UVB (ultraviolet B), then darkness. Aim for UVI (ultraviolet index) 2–3 at the back on an exposed basking perch, with complete UV (ultraviolet) shade elsewhere. Meter all reachable higher positions after moving branches or changing mesh. This is specialist husbandry guidance, not a controlled proof of one optimum exposure for every lineage.

References: [1] [5]

Humidity needs a daily cycle

Let humidity cycle through roughly 40–70%, with brief higher readings after misting and drying between cycles. Measure with a digital probe near the middle of the enclosure and check sheltered resting sites separately. Record the low reading before the next spray; do not maintain a constant 40% simply because it is the bottom of the range. Young animals dehydrate more readily, so preserve a more humid sheltered choice and monitor their drinking, sheds and condition closely.

Provide fresh water continuously, including a secure elevated bowl when useful. Mist leaves and surfaces beside occupied routes so droplets are available without repeatedly spraying the snake directly. Clean reservoirs, nozzles, bowls and drains. Persistently wet branches, stale air or mold call for better drainage and ventilation, not a higher spray setting.

References: [1] [5] [3]

Food and development

Offer fully thawed whole rodents using appropriate feeding tools. Begin around every five to seven days for hatchlings, every one to two weeks for juveniles, and every two to four weeks for mature adults. Choose modest prey sizes and adjust portion and interval together against body condition, growth and the established feeding history. These intervals are a starting plan, not a demand to feed a large prey item whenever the snake is active.

A varied, good-quality whole-prey diet normally does not require routine vitamin or calcium dusting. ReptiFiles suggests occasional supplements, but does not establish a universal dose; we use the clinical complete-prey default and reserve additions for a dietary or veterinary reason. Record food actually eaten, not merely offered. Persistent refusal with declining condition or any repeated regurgitation warrants clinical assessment.

References: [1] [5] [6] [7]

Commitment and practical costs

The Los Angeles Zoo estimates 15–20 years. Our specialist budget reflects a carefully furnished arboreal enclosure, reliable climate instruments, replacement lighting and a vet comfortable with tree pythons. Before purchase, write down how a substitute carer would check the animal without unnecessary removal. Include perch maintenance and misting-equipment inspection in the notebook so the enclosure remains functional as it ages.

References: [2]

Plan care around the occupied perch

Build maintenance around the occupied branch. Make it possible to change water and remove waste without pushing through the snake’s coils. For necessary removal, move the supported perch into secure temporary accommodation, then allow the animal to leave voluntarily. Never pull a tightly gripping python free.

Support the body at several points during transfers, keep sessions brief and stop when the animal cannot settle. Check every perch fixing as the animal gains mass, and retain clear access to warm, cool and concealed positions. A tall enclosure is useful only if those routes and drinking points remain accessible.

References: [5] [1] [7]

Arrival and shedding checks

Prepare separate arrival accommodation with removable perches, cover and dedicated equipment. Obtain the seller’s identification, previous temperatures, feeding and shedding history, and arrange a reptile-veterinary assessment and appropriate screening. Keep quarantine release criteria specific to the animal and disease risks.

During a shed, maintain drinking access, humid cover and rough surfaces without leaving all perches wet. Let the snake shed without peeling skin or eye caps. Persistent retained material, mouth discharge, changed breathing, abnormal movement or deteriorating weight needs veterinary attention. These signs are reasons for assessment, not diagnoses that can be solved by misting alone.

References: [8] [7] [1]

Observe development without turning it into a disturbance

Young green tree pythons change color as they mature, but the timing and juvenile colors vary across documented species and populations. Compare photographs taken during ordinary observation while also recording body condition, activity and feeding. A bright or familiar color does not prove good health.

Observe occasionally after dark as well as by day. Daytime coiling can conceal use of the branch network at other times. Retain familiar cover when adjusting one part of the enclosure, and remeasure the actual resting positions after each change.

References: [2] [4] [5]

Where recommendations differ

ReptiFiles lists a 3′ × 2′ × 2′ (91 × 61 × 61 cm) starting enclosure while also requiring full extension; the zoo and breeder accounts describe adults up to about six feet. We retain the extension principle and enlarge the footprint. Walder and Walsh emphasize horizontal travel and warn that a high perch far from water may impede drinking. Our greater preferred height therefore requires connected routes and accessible water, not an isolated top branch.

Walder and Walsh give a warmer 86–88°F (30–31°C) basking area and 78–80°F (26–27°C) retreat, with nights no lower than about 70–72°F (21–22°C). ReptiFiles uses the lower adult operating range above and explicitly measures its basking branch with a probe. Both are specialist practice, not controlled comparisons; locality, age and measurement position complicate direct comparison. We start established adults with the lower plan and retain the warmer night floor for young animals, then adjust from documented individual responses.

Adult feeding intervals also differ: the breeder account uses meals every 10–14 days, while ReptiFiles allows two to four weeks with age-dependent portion sizes. Those schedules are not meaningful without meal size and body condition. We choose measured, less frequent mature-adult feeding as a starting approach; smaller portions at shorter intervals can suit an individual under a recorded care plan. Do not average the intervals into a supposed biological requirement.

References: [1] [5] [2]

Sources & further reading

Read the full recommendations and check details for your animal, equipment, and local conditions.

1. ReptiFiles: green tree python care
2. Los Angeles Zoo: green tree python
3. Brookfield Zoo: green tree python
4. Reptile Database: Morelia azurea and comparison with M. viridis
5. Rico Walder and Trooper Walsh: green tree python care
6. VCA Animal Hospitals: feeding snakes
7. Melissa Witherell DVM: python health and shedding (DVM: Doctor of Veterinary Medicine)
8. The Unusual Pet Vets: reptile quarantine

Original Creature Corner guide. Editorial fact and citation checks are recorded; independent veterinary review has not been performed.