Green Tree Python Care Guide | How to Keep High-Humidity, Arboreal Snakes | ブリちょく
Reptiles| ✍️ BreederDirect Editorial
Green Tree Python Care Guide | How to Keep High-Humidity, Arboreal Snakes
A comprehensive guide to caring for the stunning green-colored Green Tree Python (GTP). We explain tree-dwelling-appropriate cage design, high humidity maintenance, temperature control, feeding, and handling precautions in an easy-to-understand manner for beginners.
Key Takeaways
A comprehensive guide to caring for the stunning green-colored Green Tree Python (GTP). We explain tree-dwelling-appropriate cage design, high humidity maintenance, temperature control, feeding, and handling precautions in an easy-to-understand manner for beginners.
What is the Green Tree Python?
The Green Tree Python (Morelia viridis, hereafter GTP) is an arboreal python native to rainforests in New Guinea, Indonesia, and northern Australia. Adult specimens display a vibrant lime-green coloration, while young individuals (neonates) are yellow or red, gradually changing to green as they grow (color change). Observing this color-change process is one of the major attractions of keeping GTPs.
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Adult body length is approximately 120–180 cm (females tend to be slightly larger). In the wild, they are characterized by a distinctive hunting style where they coil into an S-shape on tree branches to ambush prey—a behavior they replicate in captivity as well.
Note: GTPs are not suitable for handling and are best appreciated as "observational" reptiles. Frequent handling causes stress.
Required Cage and Design Setup
Cage Size
Since GTPs are arboreal, "height" is critical. A minimum cage size of 60×45×90 cm (width×depth×height) or larger is recommended. For adults (especially females), 90×60×120 cm or larger is ideal.
Mesh cages with high ventilation are difficult to manage for humidity, so front-opening acrylic or wooden cages (with ventilation holes on the sides and top) are easier to work with.
Installing Perches (Branches)
GTPs remain stationary on branches (perches) almost constantly throughout the day. Install multiple horizontal branches with a diameter of 2–4 cm inside the cage. Place perches at both high positions (near the hot spot) and low positions (cool area) to create an environment where the snake can regulate its body temperature.
If using natural wood, allow it to dry thoroughly, then sterilize it by heating in an oven at 120°C for 30 minutes.
Temperature Management
Proper temperature gradient (thermogradient) is essential for GTP health.
Zone
Temperature
Basking Spot (Hot Spot)
30–32℃
Warm Area (Ambient)
27–29℃
Cool Area
24–26℃
Night (Overall)
22–24℃
Heating is typically provided using a basking bulb (incandescent or infrared) mounted at the top of the cage, or a CHE (ceramic heat emitter) paired with a thermostat for temperature stability. Overheating can be fatal, so always verify temperature with thermometers placed in at least 2 locations.
Humidity Management
GTPs require a high-humidity environment, with daytime levels around 70–80% and nighttime levels around 80–90%.
Maintenance Methods
Bedding choice: Coconut husk and sphagnum moss are highly effective for moisture retention. A 3–5 cm layer helps maintain natural humidity
Misting: Morning and evening misting (on cage walls and bedding) is standard. An automatic misting system makes management easier
Manual misting: Use a spray bottle to create a fine mist. GTPs will lick water droplets, which also serves as a drinking source
Water bowl: Place a small water bowl in a low position (they may use it for bathing and shedding assistance)
Over-drying causes improper shedding (old skin remains). Especially during pre-shed (when eyes appear bluish-white), maintain higher humidity.
Feeding Method
Appropriate Food
The main diet consists of mice and rats. Use prey roughly the same size as the thickest part of the snake's body as a guideline.
Neonates (juveniles): Progress gradually from pinky mice to fuzzy mice
Adults: Hopper mice to adult mice, or small rats
Use thawed frozen food for safety. Feed inside the cage using tweezers. Since GTPs are ambush hunters that respond to movement, gently wiggle the prey to encourage striking.
Feeding Frequency
Age
Feeding Frequency
0–6 months
Once every 5–7 days
6 months–1 year
Once every 7–10 days
Adults
Once every 10–14 days
GTPs may refuse food during breeding season, pre-shed, or after environmental changes. One or two missed feedings are not a concern, but if refusal continues for more than a month, consult a veterinarian.
Handling Precautions
GTPs have a strong defensive instinct and may bite if startled. Even tame individuals become stressed from excessive handling, so follow these guidelines:
Do not handle for 48–72 hours after feeding (to prevent regurgitation)
Do not touch during pre-shed (they are unstable and more aggressive)
Limit handling to 10–15 minutes per session
Use a snake hook to remove the snake from the cage as a routine practice
Avoid sudden movements; support and grip slowly and gently
Summary
The Green Tree Python requires a high-humidity environment, proper temperature management, and an arboreal cage setup—unique requirements that make it an advanced-level reptile. However, with appropriate conditions, they can be successfully kept for over 20 years. While they offer the pleasure of observing vibrant coloration and unique coiling posture, daily care demands precision and attention. Prepare your equipment before acquisition and approach husbandry with proper knowledge.
