Mediterranean tortoise · Greece & the southern Balkans

Know whether your marginated tortoise's care is actually on track.

Your marginated tortoise can't tell you the basking spot has drifted cool, or that it's not fit to hibernate this winter. baskr watches the pattern across your logs, temperature, humidity, weight and feeding, and shows you what needs attention before it becomes a problem.

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Doing okay

Marginated Tortoise

Basking too cool

Averaged 29°C vs the 32–35°C it needs. Check the basking lamp.

Basking spot

32–35°C · 90–95°F

Cool side

20–25°C · 68–77°F

Humidity

40–60%

Ideal ranges for Testudo marginata, the same targets baskr scores your logs against.

Basking and warm figures are surface temperatures at the spot; cool and ambient are air. Measure with a probe or infrared thermometer at the animal's height.

Marginated Tortoise: a few things worth knowing

The largest European tortoise: adults reach around 30–35 cm with a heavy, elongated shell.
Named for the flared, skirt-like rear marginal scutes that adults develop, a distinctive 'bell-bottom' look.
A Mediterranean weed grazer kept much like Hermann's and Greek tortoises, dry, sunny and high-fibre.
Healthy adults hibernate through winter, a natural part of their year.
Hardy and long-lived (50+ years), and fairly cold-tolerant for a tortoise within its Mediterranean range.

When is your marginated tortoise active?

Diurnal

Active by day

Where marginated tortoises come from

Greece & the southern Balkans

Wild climate. Mediterranean hills; hot dry summers and cool winters, which healthy adults hibernate through.

Why the care is what it is. This is why baskr targets a 32 to 35°C basking spot, strong UVB and a dry weed diet, with a controlled winter hibernation for healthy adults.

What baskr watches for your marginated tortoise

Logging is the input. The product is spotting when a single off reading becomes a pattern worth acting on.

Basking spot

32–35°C (90–95°F)

A cool basking spot undercuts appetite and digestion.

Cool side

20–25°C, dry and draught-free

Cold, damp conditions risk respiratory infection.

Humidity & pyramiding

40–60%, with a humid hide for youngsters

Too dry while growing pyramids the shell; too damp risks infection.

Weight & pre-hibernation

Steady, and a healthy weight before any hibernation

An underweight or unwell tortoise should not be hibernated, check with an experienced vet.

Diet & fibre

Weeds and greens, high fibre

Fruit and rich foods cause runny droppings and harm.

Hibernation vs illness

A gradual seasonal slow-down in cool months

baskr separates a normal pre-hibernation dip from off-season illness to act on.

How to set up a marginated tortoise terrarium

Minimum size
A 5×2.5 ft (150×75 cm) open table minimum for an adult of the largest European tortoise, bigger is better, with outdoor time in warm, dry weather.
Temperatures
Basking 32–35°C (90–95°F), a cool side of 20–25°C, dry and draught-free. Healthy adults hibernate cold (around 4–8°C) in winter.
Substrate
A dry, dig-friendly topsoil and sand mix, with a humid hide for youngsters. Keep the main floor dry.
Hides & décor
A solid hide plus shade; outdoors, a secure shelter. They dig a little to thermoregulate and nest.
Layout
An open, dry table: a basking zone under strong UVB, a cool dry end, a humid hide, and a shallow water dish. Outdoor grazing in warm, dry weather is ideal.

Plants for a marginated tortoise terrarium

Safe to include

  • Edible weeds (dandelion, plantain, clover)
  • Leafy greens
  • Grasses
  • Hibiscus

Avoid

  • Fruit
  • High-protein foods
  • Pesticide-treated plants
  • Toxic ornamentals (buttercup, foxglove)

A weed lawn kept fairly dry is ideal, this is a Mediterranean grazer, not a fruit or salad tortoise.

What to feed a marginated tortoise, and what to avoid

Staples

  • Edible weeds (dandelion, plantain, clover)
  • Leafy greens
  • Grasses

Occasional / treats

  • Flowers
  • A little hibiscus

Never feed

  • Fruit
  • High-protein foods
  • Pellets not designed for grazing tortoises

Supplements. Calcium (a cuttlebone plus light dusting) and UVB.

Good to know. A high-fibre weed grazer, like its Testudo relatives. Fruit and rich foods cause runny droppings and harm.

The gear that matters for a marginated tortoise

The right kind of kit, pick brands you trust.

UVB lighting

A high-output 10–12% T5 HO tube (Ferguson zone 3–4) over the basking zone, replaced every 12 months.

Basking heat

A basking lamp to reach 32–35°C over a solid spot, on a thermostat.

Thermostat

Controls the heat safely.

Thermometer + hygrometer

To track the basking zone and keep damp in check.

Cuttlebone / calcium

A cuttlebone to gnaw supports shell and beak.

A controlled hibernation method

For healthy adults: a monitored fridge or cool cellar method, done with veterinary guidance.

The kind of thing baskr will tell you

Grounded in your own logs and the ideal ranges above, plain language, never a diagnosis.

Basking spot averaged 29°C this week, below the 32–35°C a marginated tortoise needs. Check the lamp.

Cold and damp readings together, a respiratory-infection risk. Dry and warm the enclosure and watch breathing.

Weight has dropped ahead of the cool season. Don't hibernate an underweight or unwell tortoise, check with an experienced reptile vet first.

Is your marginated tortoise's setup on track?

Enter your own readings for an instant care score, the same check baskr runs for you every day.

Do you have a UVB light?

Enter a reading or two above to see Marginated Tortoise's care score.

A quick guide, not a diagnosis. Ideal ranges vary with age, morph and setup, and individual animals differ, so confirm anything critical with an experienced keeper or a reptile vet.

More tortoises

All tortoises

Marginated Tortoise care questions

How big do marginated tortoises get?+

They're the largest European tortoise, reaching around 30–35 cm, with the distinctive flared rear scutes adults develop. They need a slightly larger table than a Hermann's or Greek.

Do marginated tortoises hibernate?+

Healthy adults do, in a controlled way and after a vet check. Never hibernate an unwell or underweight tortoise, use a monitored method rather than a cold garage.

What do marginated tortoises eat?+

Edible weeds, leafy greens and grasses, a high-fibre, dry-country diet. Avoid fruit and high-protein foods.

Is care different from a Hermann's tortoise?+

Very similar Mediterranean care, the marginated is just larger and has the flared 'skirt' scutes. Same dry setup, weed diet, strong UVB and controlled hibernation.

Free tools for your marginated tortoise

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Log your marginated tortoise's care in seconds and baskr does the watching. Free for your first 3 animals.

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Last reviewed August 2026. General husbandry guidance, not veterinary advice, and ranges vary with age, morph, subspecies and setup. Confirm anything critical with an experienced keeper or an exotics vet.