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Greek Tortoise — care sheet
Testudo graeca · Intermediate
| Adult size | Roughly 5–12 in (13–30 cm) shell length depending on subspecies; larger northeastern-Turkey (ibera) types reach the upper end and can weigh up to ~6 kg (13 lb). |
|---|---|
| Lifespan | 50+ years is normal with good care; verified individuals have exceeded 100 years. Plan for a genuine lifetime, multi-generational commitment. |
| Enclosure | Adults need a minimum of ~12 sq ft (about 6 x 3 ft / 1.8 x 0.9 m) of usable FLOOR space indoors, and bigger is always better. Ideally they live outdoors in a secure, predator-proof, escape-proof planted pen for the warm months — tortoises are diggers and surprising climbers, so bury the walls and check the top. |
| Basking / warm zone | Basking spot 95-105°F (35-40°C) directly under the heat lamp. |
| Cool side | Ambient / cool end 75-85°F (24-29°C), giving a proper warm-to-cool gradient across the enclosure. |
| Night | Heat can be turned off at night; a natural drop is healthy. Don't let it fall below ~50°F (10°C) indoors — if a night shelter dips lower, give supplementary heat to hold ~55-60°F (13-16°C). |
| UVB & lighting | High UVB requirement (Ferguson Zone 3 — open sun-basker, basking-zone UVI ~2.9-7.4). Use a strong linear T5 HO tube such as Arcadia T5 HO 12% or Zoo Med Reptisun 10.0, sized to cover much of the enclosure and mounted per the maker's chart (roughly 6-8 in for the Zoo Med / 17-18 in for the Arcadia above the shell). Replace UVB tubes every ~12 months even if they still glow. Natural unfiltered sunlight outdoors is ideal. |
| Humidity | An arid/semi-arid species: low ambient humidity is fine, but always provide a humid microclimate — a humid hide or damp substrate area kept around 65-70% so they can hydrate and burrow. Hatchlings are far more prone to dehydration and do best kept at 65-70% ambient with regular soaks. |
| Substrate | A deep, diggable, moderately water-holding mix — a ~50/50 blend of topsoil and play sand (or topsoil/coir with some sand) works well. At least 4 in (10 cm) deep so they can dig and thermoregulate; deeper is better. Avoid cedar and pine shavings (respiratory irritants). Spot-clean often and fully replace every few months. |
| Diet | Strict herbivore and grazer. Base the diet on low-calorie, high-fiber leafy weeds and greens: dandelion, clover, plantain, hawksbit, cat's ear, sow thistle, plus collard/turnip/mustard greens, kale, hibiscus leaves and flowers, and grazing grasses. Offer variety daily. Fruit is NOT appropriate for Mediterranean tortoises — their gut isn't built for sugary food, and it causes digestive upset. Avoid high-protein/animal foods and iceberg-type filler greens. |
| Supplements | Calcium is critical for shell and bone health. Dust food with a plain calcium (or a plant-focused supplement like Repashy SuperVeggie) on most feeds, and keep a cuttlebone available for free-choice gnawing. Keepers relying on strong UVB or real sunlight generally use little-to-no added D3; if UVB is weak or absent, a limited D3 source becomes important — get the balance right, because both deficiency and excess cause problems. |
Before you buy
- This is a 50-to-100-year commitment — realistically it may outlive you, so have a succession plan.
- You need real space and, ideally, a garden: a secure outdoor pen makes keeping one dramatically easier and healthier.
- Winter means either a proper controlled hibernation setup (a fridge or cold room with a thermometer) or year-round indoor heating for non-hibernating types.
- Budget for strong T5 HO UVB (replaced yearly), heat, a large enclosure, and access to an exotics vet.
- Buy captive-bred from a reputable source — wild-caught imports often arrive stressed, parasitized, and dehydrated, and wild collection harms native populations (Testudo graeca is a protected/CITES-listed species).
See a reptile vet if…
- Soft, flexible, or increasingly lumpy/pyramided shell, bowed or weak limbs, or a tortoise that won't grow — classic signs of metabolic bone disease; see an exotics vet.
- Nasal discharge, bubbling, wheezing, open-mouth breathing, or a persistently gaping mouth — possible respiratory infection (a real emergency in tortoises).
- Runny or crusty eyes, or eyes swollen shut — get it checked.
- Not eating for an extended period, marked lethargy, or steady weight loss (watch your weight log) — non-specific but always worth a vet visit.
- Any wound, cheesy/white patches or ulcers in the mouth (mouth-rot), or a runny nose noticed before hibernation — do NOT hibernate; see a vet first.
- Straining, no droppings, or a swelling near the tail (possible constipation, egg-binding, or prolapse) — urgent.
Never
- Never feed fruit or high-protein/animal foods to a Mediterranean tortoise.
- Never keep two males together, and never let a single female be constantly harassed by a male.
- Never hibernate a sick, underweight, dehydrated, or newly acquired tortoise, and never let hibernation temps swing high or near freezing.
- Never rely on a plain heat/house bulb without proper UVB — it leads to metabolic bone disease.
- Never use cedar or pine shavings as substrate.
- Never house a Greek tortoise with other species, and never buy wild-caught if a captive-bred option exists.
Common greek tortoise questions
How hard are Greek Tortoises to keep — are they good for beginners?
Intermediate. Hardy and long-lived, but not a "starter" pet. The commitment is enormous (decades, easily outliving you), they need real floor space and strong outdoor-grade UVB, and getting the diet and hibernation right takes homework. A well-set-up Greek tortoise is low-drama; a poorly set-up one develops slow, preventable diseases you won't notice until they're advanced.
What do Greek Tortoises eat?
Strict herbivore and grazer. Base the diet on low-calorie, high-fiber leafy weeds and greens: dandelion, clover, plantain, hawksbit, cat's ear, sow thistle, plus collard/turnip/mustard greens, kale, hibiscus leaves and flowers, and grazing grasses. Offer variety daily. Fruit is NOT appropriate for Mediterranean tortoises — their gut isn't built for sugary food, and it causes digestive upset. Avoid high-protein/animal foods and iceberg-type filler greens.
How big an enclosure do Greek Tortoises need?
Adults need a minimum of ~12 sq ft (about 6 x 3 ft / 1.8 x 0.9 m) of usable FLOOR space indoors, and bigger is always better. Ideally they live outdoors in a secure, predator-proof, escape-proof planted pen for the warm months — tortoises are diggers and surprising climbers, so bury the walls and check the top.
What basking temperature do Greek Tortoises need?
Basking spot 95-105°F (35-40°C) directly under the heat lamp.
What should the cool side be for Greek Tortoises?
Ambient / cool end 75-85°F (24-29°C), giving a proper warm-to-cool gradient across the enclosure.
What night-time temperature do Greek Tortoises need?
Heat can be turned off at night; a natural drop is healthy. Don't let it fall below ~50°F (10°C) indoors — if a night shelter dips lower, give supplementary heat to hold ~55-60°F (13-16°C).
What UVB and lighting do Greek Tortoises need?
High UVB requirement (Ferguson Zone 3 — open sun-basker, basking-zone UVI ~2.9-7.4). Use a strong linear T5 HO tube such as Arcadia T5 HO 12% or Zoo Med Reptisun 10.0, sized to cover much of the enclosure and mounted per the maker's chart (roughly 6-8 in for the Zoo Med / 17-18 in for the Arcadia above the shell). Replace UVB tubes every ~12 months even if they still glow. Natural unfiltered sunlight outdoors is ideal.
What humidity do Greek Tortoises need?
An arid/semi-arid species: low ambient humidity is fine, but always provide a humid microclimate — a humid hide or damp substrate area kept around 65-70% so they can hydrate and burrow. Hatchlings are far more prone to dehydration and do best kept at 65-70% ambient with regular soaks.
What substrate do Greek Tortoises need?
A deep, diggable, moderately water-holding mix — a ~50/50 blend of topsoil and play sand (or topsoil/coir with some sand) works well. At least 4 in (10 cm) deep so they can dig and thermoregulate; deeper is better. Avoid cedar and pine shavings (respiratory irritants). Spot-clean often and fully replace every few months.
What supplements do Greek Tortoises need?
Calcium is critical for shell and bone health. Dust food with a plain calcium (or a plant-focused supplement like Repashy SuperVeggie) on most feeds, and keep a cuttlebone available for free-choice gnawing. Keepers relying on strong UVB or real sunlight generally use little-to-no added D3; if UVB is weak or absent, a limited D3 source becomes important — get the balance right, because both deficiency and excess cause problems.
How big do Greek Tortoises get?
Roughly 5–12 in (13–30 cm) shell length depending on subspecies; larger northeastern-Turkey (ibera) types reach the upper end and can weigh up to ~6 kg (13 lb).
How long do Greek Tortoises live?
50+ years is normal with good care; verified individuals have exceeded 100 years. Plan for a genuine lifetime, multi-generational commitment.
What are the signs Greek Tortoises are sick or need a vet?
See a reptile or exotics vet if you notice: Soft, flexible, or increasingly lumpy/pyramided shell, bowed or weak limbs, or a tortoise that won't grow — classic signs of metabolic bone disease; see an exotics vet.; Nasal discharge, bubbling, wheezing, open-mouth breathing, or a persistently gaping mouth — possible respiratory infection (a real emergency in tortoises).; Runny or crusty eyes, or eyes swollen shut — get it checked.; Not eating for an extended period, marked lethargy, or steady weight loss (watch your weight log) — non-specific but always worth a vet visit.; Any wound, cheesy/white patches or ulcers in the mouth (mouth-rot), or a runny nose noticed before hibernation — do NOT hibernate; see a vet first.; Straining, no droppings, or a swelling near the tail (possible constipation, egg-binding, or prolapse) — urgent..
Sources: DubiaRoaches — Greek Tortoise Care Sheet (ReptiFiles-methodology) · Reptile Supply — How to Care for Your Greek Tortoise · Reptile Centre — Which Ferguson Zone are Mediterranean Tortoises? · Tortoise Trust — Safer Hibernation · Tortoise Trust — Feeding Tortoises: Avoiding Dietary Disasters · Wikipedia — Greek tortoise (Testudo graeca) · VCA Animal Hospitals — Common Diseases of Tortoises. Written and fact-checked by The Baskden Team — kind, general guidance, not a diagnosis and not a substitute for an exotics vet. baskden.com