A tall, planted terrarium
Green tree frogs climb and sleep in vegetation, so choose a tall terrarium — around eighteen inches tall or more for one or two frogs — with a mesh top for airflow. Fill it with branches set at angles, broad-leaved plants the frog can sleep on top of, and a few leafy hiding spots at different heights. The frog will pick a favourite sleeping leaf and return to it daily, so give it choices rather than one token plant. A simple background on the back glass helps the frog feel enclosed rather than exposed.
Moisture done properly
Amphibian skin drinks in whatever it touches, which makes water quality a housing decision, not an afterthought. Treat all water — misting, soaking dish, everything — with a dechlorinator, or use spring water, and never let untreated tap water near the frog. Mist the enclosure in the evening to raise humidity for the frog's active hours, then let ventilation carry it gently down by morning. A moisture-holding substrate such as coco fibre or plain sphagnum moss keeps that rhythm stable and is easy to spot-clean.
The soaking dish and gentle warmth
Set a wide, shallow dish of dechlorinated water at floor level, deep enough for the frog to sit in up to its belly. Green tree frogs soak at night to rehydrate, and they often use the dish as a toilet too, so it needs refreshing daily with clean treated water. Most homes need little or no extra heating: mid-70s by day with a slight night-time dip suits this species, and strong heat combined with poor airflow is a quicker route to trouble than a cool room.
A frog to watch at dusk
Build the first home around observation. The frog sleeps through the day, wakes as light fades, and spends the night climbing, soaking and hunting insects offered in the evening. Handling should be rare — if the frog must be moved, wet gloved hands or a damp cup protect its skin from the oils and dryness of human palms. Keep the enclosure away from perfumes, sprays and kitchen fumes, which travel straight through that permeable skin.
Keep the evening routine shared
Frog care is a chain of small nightly tasks — mist, refresh the dish, feed, check the temperature — and it breaks easily when two people assume the other did it. Write the routine onto a profile the whole household can see, including the dechlorinated-water rule, which is the one detail a helpful guest or sibling is most likely to miss. KinsLe's Family Sharing keeps those instructions in front of everyone, so the frog's water is always treated and its dish is always fresh, whoever is home.