Eastern Box Turtle — Care Sheet & Morphs

Q: How big does an adult Eastern Box Turtle get?

An adult Eastern Box Turtle typically measures 10–18 cm.

Husbandry requirements

Eastern Box Turtle — origin: Eastern North America (eastern United States; some subspecies reaching into northeastern Mexico). Lives in moist woodlands, forest edges and wooded meadows..

Terrarium temperature gradient

Night min15 °C

Cool side20–24 °C

Warm side26–29 °C

Basking spot29–32 °C

A hot spot under a lamp is necessary (a diurnal, heliophilic reptile). A night-time drop down to ~15 °C is beneficial (tolerates cooler). A seasonal cycle is useful; a controlled brumation (~5-10 °C) is possible for temperate, healthy and acclimatized specimens, under supervision.

Enclosure (adult)

120 × 60 × 45 cm

Terrestrial terrarium / large-floor-area tortoise table for one adult. A planted, shaded outdoor enclosure is strongly recommended in fine weather.

Minimum dimensions for a single adult; bigger is always better. Provide numerous hides, plants and burrowing areas. Escape- and digging-proof fencing (the turtle digs and climbs), and protection against predators outdoors. Avoid cohabitation: a solitary and easily stressed species.

Humidity

60–80 %

High humidity is essential. Keep the substrate moist, mist regularly and provide a leaf litter. Air that is too dry promotes eye, respiratory and skin-shedding problems.

Substrate

Fertilizer- and pesticide-free potting soil/peatCoco fibreSphagnum mossDead-leaf litter (oak, beech)Cypress bark mulch

Loose, moist substrate at least 8-15 cm deep to allow burrowing. Keep it moist without waterlogging; remove droppings and mouldy spots regularly.

UVB

Recommended

UVB lighting is essential (tube or lamp 5-7%, target UVI ~2-3 in the basking zone). To be replaced every 6 to 12 months depending on the model. Exposure to real sunlight outdoors (without a filtering pane of glass) is ideal.

Water source

Always available

A large, shallow water container allowing the turtle to enter and bathe without risk of drowning. It drinks, rehydrates and defecates there: clean and change the water daily. Regular lukewarm baths are useful for juveniles.

Origin

Emydidae

Eastern North America (eastern United States; some subspecies reaching into northeastern Mexico). Lives in moist woodlands, forest edges and wooded meadows.

Feeding & health

Diet

Omnivore — Insects, earthworms, slugs, snails, woodlice

About 50% animal protein and 50% plant matter (mushrooms, berries, edible flowers, varied foliage). Very attracted to bright red foods (strawberries, tomatoes): to be given in moderation. Juveniles more carnivorous. Supplement with calcium and provide a source of vitamin A (orange/green vegetables, occasional liver) to prevent hypovitaminosis A. Avoid excess sugary fruit.

Breeding

Oviparous

Clutch 3–8 eggs/young. Buried egg-laying, often 1 to 2 clutches per year after seasonal stimulation (overwintering). Incubation of about 70 to 90 days; temperature-dependent sex determination (TSD). Late maturity (often 5 to 10 years). Females can store sperm for several years.

Health watch points

Hypovitaminosis A (swollen/closed eyes, skin and respiratory damage)
Aural abscesses (typical swelling behind the eye), common in this species
Metabolic bone disease (soft/deformed shell) from UVB or calcium deficiency
Respiratory infections (unsuitable temperature or humidity)
Shell rot and parasitism, especially in wild-caught specimens

Morphs & genetics

Registry of 3 documented genes for Eastern Box Turtle.

High Yellow / Hypo lemon dropDom
Melanistic black phaseDom
Axanthic (Rare)Rec

Pairing calculator

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

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Eastern Box Turtle × Eastern Box Turtle

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 eastern box turtle.

How big does an adult Eastern Box Turtle get?▾

An adult Eastern Box Turtle typically measures 10–18 cm (adult carapace length. the gulf coast subspecies (t. c. major) is the largest (up to 20 cm); the florida form (t. c. bauri) stays smaller.).

What temperature and humidity does a Eastern Box Turtle need?▾

A gradient of roughly 20–24 °C on the cool side to 26–29 °C on the warm side, with a basking spot of 29–32 °C. Humidity 60–80 %.

What does a Eastern Box Turtle eat?▾

Omnivore: Insects, earthworms, slugs, snails, woodlice.

Is the Eastern Box Turtle a good reptile for beginners?▾

Intermediate level. Shy but intelligent; able to recognize its keeper. Prone to stress in open or overly exposed terrariums: requires moist ground and a leaf litter to burrow and hide. WARNING: a species listed in CITES Appendix II and protected in many US states; wild populations in decline (classified Vulnerable/near threatened). It is IMPERATIVE to favour a captive-bred, traceable specimen; wild-caught individuals acclimatize poorly, are often parasitized and stressed, and their keeping may be regulated (CITES/EU). Plan ahead: a lifespan of 50–100 yrs.

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