Hermann's Tortoise Care Guide (2026)

Hermann's Tortoises (Testudo hermanni) are one of the most popular tortoise species in the hobby — and one of the most rewarding to keep well. Native to the Mediterranean region, they are hardy, personable, and visually striking, with the bold yellow-and-black patterned shells that make them immediately recognizable. They are also an intermediate-level species: diet, humidity, supplementation, UVB, and brumation all need to be managed correctly for a Hermann's to thrive over its 50–70+ year lifespan.

This guide covers everything you need to set up and maintain a healthy Hermann's Tortoise enclosure.

Overview

Parameter	Value
Scientific Name	Testudo hermanni
Experience Level	Intermediate
Adult Size	7–11 inches (subspecies-dependent)
Lifespan	50–70+ years
Activity Pattern	Diurnal
Temperament	Docile; can be standoffish when new
Diet	Herbivorous
UVB Required	Yes
Brumation	Yes
Basking Temp	90–95°F
Cool Side	70–75°F
Humidity	40–60%

Subspecies

There are two main subspecies of Hermann's Tortoise kept in captivity:

Western Hermann's Tortoise (T. h. hermanni) — smaller, typically reaching around 7 inches; more boldly patterned; native to southern France, Italy, and the western Mediterranean
Eastern Hermann's Tortoise (T. h. boettgeri) — larger, reaching up to 11 inches; slightly less vivid patterning; native to the Balkans, Romania, Greece, and the eastern Mediterranean

Care requirements are essentially the same between subspecies. The primary difference is adult size, which affects long-term enclosure planning.

Size & Lifespan

Hermann's Tortoises are a medium-small tortoise species — significantly more manageable than a Sulcata, but still a decades-long commitment. A lifespan of 50–70+ years means this animal will likely outlive its keeper without appropriate estate planning.

→ Hermann's Tortoise Lifespan Guide

Temperament

Hermann's Tortoises are generally docile and warm up to consistent handling over time. Newly acquired animals are often standoffish and may withdraw into their shell — this is normal and resolves with patience. Hermann's can be kept in groups in sufficiently large enclosures, but group housing requires monitoring. Males can be territorial with each other during breeding season and will harass females; mixed-sex groups work best with significantly more females than males. When in doubt, house individually.

Enclosure

Hermann's Tortoises are active foragers that need horizontal floor space above all else. Tortoise tables (open-top enclosures) are generally preferred over glass terrariums for better airflow.

Life Stage	Minimum Enclosure Size
Baby / Juvenile (under 6 months)	36" × 18" × 18"
Young (growing)	48" × 24" × 24"
Sub-Adult / Adult (single or pair)	72" × 24" × 24" minimum

Outdoor enclosures are strongly recommended for adult Hermann's in appropriate climates. Ensure the enclosure is escape-proof — Hermann's can climb — and secure from predators.

Ready to build your setup? The Hermann's Tortoise Habitat Build Guide walks through the complete enclosure build with specific product recommendations.

→ Hermann's Tortoise Habitat Build Guide — Full Equipment List
→ Hermann's Tortoise Enclosure Guide
→ Best PVC Enclosures for Reptiles
→ Best Enclosure Stands for Reptiles

Heating

Hermann's Tortoises are diurnal baskers that require a defined thermal gradient with a strong basking spot.

Basking spot: 90–95°F
Warm side ambient: 80–85°F
Cool side: 70–75°F
Overnight: 65–70°F (acceptable for adults)

A focused basking spot lamp is the standard heating approach. Always use a thermostat to prevent overheating. Avoid heat mats under substrate — tortoises do not thermoregulate from below.

→ Best Heat Lamps for Reptiles
→ Best Ceramic Heat Emitters for Reptiles
→ Best Deep Heat Projectors for Reptiles
→ Best Thermostats for Reptiles
→ Best Thermometers for Reptiles
→ Best Temperature Guns for Reptiles

Lighting

UVB lighting is not optional for Hermann's Tortoises. Without it, they cannot synthesize vitamin D3, leading to metabolic bone disease and shell deformities. Use a high-output T5 HO UVB bulb rated for desert or Mediterranean species. Run lighting on a 12–14 hour cycle in summer, 10–12 hours in winter.

Natural unfiltered sunlight cannot be fully replicated by artificial UVB. Outdoor access when weather permits is highly beneficial.

→ Best UVB Bulbs for Reptiles
→ Best UVB Fixtures for Reptiles
→ Best Basking Lamp Domes for Reptiles
→ Best Timers for Reptiles

Humidity

Target ambient humidity of 40–60%. Hermann's are Mediterranean animals adapted to drier conditions than tropical species. Constantly damp conditions and poor ventilation are a significant health risk.

Provide a damp hide or humid corner where the tortoise can regulate hydration
Soak juveniles in shallow warm water 2–3 times per week for 10–15 minutes
Ensure good ventilation — this is one reason tortoise tables are preferred over enclosed glass tanks

→ Best Humidity Gauges for Reptiles

Substrate

Substrate should support burrowing, hold slight moisture without becoming waterlogged, and be safe if accidentally ingested. Provide at least 3–4 inches depth for adults.

Coconut fiber (coco coir) — excellent base substrate; holds moisture well and is safe for tortoises
Topsoil / play sand mix (70/30) — widely used and cost-effective for larger enclosures; holds burrow shape well
Excavator clay — excellent for burrowing and tunnel integrity

Avoid pure sand (impaction risk), calcium sand, and wood shavings of any kind.

→ Best Excavator Clay for Reptiles
→ Best Loose Particle Substrate for Reptiles
→ Best Coconut Fiber for Reptiles

Diet

Hermann's Tortoises are strict herbivores. Diet quality is one of the primary determinants of long-term health and shell condition. A diet too high in protein, fruit, or water-dense foods causes shell pyramiding, liver damage, and shortened lifespan.

Core Diet (80%+)

Grasses and hay (Timothy hay, orchard grass) — the single most important component
Dark leafy greens: dandelion greens, collard greens, endive, escarole, mustard greens
Edible weeds: dandelion (whole plant), plantain, clover, sow thistle

Occasional (10–20%)

Flowers: hibiscus, rose petals, dandelion flowers, nasturtium
Succulents: prickly pear cactus pad (spine-free)

Limit or Avoid

Fruit — high sugar; occasional treat only in very small amounts
High-oxalate greens (spinach, beet greens) — interfere with calcium absorption
High-protein foods — causes organ damage over time

→ Hermann's Tortoise Feeding Guide
→ Best Calcium Supplements for Reptiles
→ Best Vitamin Supplements for Reptiles
→ Best Food Dishes for Reptiles
→ Best Water Dishes for Reptiles

Supplementation

Calcium carbonate (without D3) — dust food lightly at every feeding; a cuttlebone left in the enclosure for free-choice calcium is also appropriate
Calcium with D3 — 1–2 times per month with adequate UVB; more frequently if UVB access is limited
Multivitamin — once every 2–4 weeks

Over-supplementation of D3 is toxic. If the animal has good UVB access, rely on the UVB source for the majority of D3 synthesis.

Brumation

Hermann's Tortoises naturally brumate during winter. In captivity, brumation is generally recommended for healthy adult animals — it supports metabolic health and is important for breeding cycles.

Before Brumation

Ensure the animal is healthy and at a good weight — do not brumate a sick or underweight tortoise
Stop feeding 3–4 weeks before the intended start to allow the gut to clear
Continue providing water during the wind-down period

During Brumation

Target temperature: 35–50°F (ideally 40–45°F)
Duration: typically 8–12 weeks depending on age and natural climate cues
Must not freeze, and must not be warm enough to become active and burn fat reserves

Waking Up

Gradually warm back to normal temperatures over several days
Offer water and shallow soaks before resuming feeding
Resume feeding once the animal is reliably active and alert

Hatchlings under one year should generally not be brumated.

→ Hermann's Tortoise Brumation Guide

Health

Shell pyramiding / MBD — caused by inadequate UVB, calcium deficiency, or excessive dietary protein; pyramiding is irreversible once it occurs
Respiratory infection — wheezing, nasal discharge, open-mouth breathing; requires veterinary treatment
Parasites — common in wild-caught animals; annual fecal exams recommended
Ear abscess — visible swelling at the side of the head; requires veterinary surgical treatment
Dehydration — sunken eyes, dry skin, reduced activity especially in juveniles; regular soaking and appropriate humidity prevent this
Shell rot — soft, discolored, or foul-smelling patches; caused by bacterial or fungal infection, often linked to excess humidity

→ Hermann's Tortoise Not Eating

Hermann's Tortoise Care Guide (2026)