Species Type
Central Asian Tortoise
Scientific Name
Testudo horsfieldii
Ag horsfieldii
Adult Size
15-20cm
Lifespan
40-60 years+
Humidity
Low to low-moderate
Natural Habitat
Dry grasslands, scrubland and semi-arid regions of central asia
To care for a Horsfield Tortoise correctly, we must look at how and where they live in the wild.
The Russian tortoise, also known as the Horsfield’s tortoise, is native to Central Asia. Unlike Mediterranean species, they experience more extreme seasonal changes, including very hot summers and cold winters.
They are natural burrowers and require deep substrate to express natural behaviour.
Captive care should focus on:
✔ Dry conditions
✔ Strong UVB exposure
✔ Deep substrate for digging
✔ High-fibre weed-based diet
Outdoor Enclosure (Primary Recommendation)
Outdoor housing is the most natural and appropriate environment.
Enclosure Size
As large as possible. Minimum 8ft x 4ft recommended for an adult.
Include:
• Secure, predator-proof walls
• Burrow-friendly soil
• Dry, well-drained ground
• Access to natural weeds
• Shaded retreat areas
Russian tortoises are strong diggers — ensure fencing extends below ground.
UK Adaptations
The UK Climate is not the same as their wild environment, so adaptations are necessary.
You may need:
- A cold frame or tortoise house
- Supplemental heat lamp and UVB
- Safe basking area
- Shelter from excessive rain
- Protection from damp conditions
Outdoor living should always provide:
- A basking zone
- A cooler retreat
- Dry, warm sleeping area
Indoor Enclosure (Alternative Setup)
Indoor setups are sometimes necessary.
Recommended:
- Open-topped tortoise table (not glass vivarium)
- Minimum 4ft x 2ft for a young tortoise, larger for adults.
Lighting
- UVB strip light (12%)
- Heat flood lamp creating basking spot of 32-35°C
- 10-12 hours light cycle
Substrate
- Top Soil/sand mix
- Avoid woodchip, pellets, artificial grass
Humidity
Russian Tortoises do not need high humidity, even as juveniles. It is not natural for them and can lead to respiratory issues if constantly exposed to damp substrate.
Temperature gradient must always be provided:
- Warm basking end
- Cooler end around 20–22°C
Hydration
Always provide:
- Fresh daily water (shallow dish)
- Access to drinking water at all times
Tortoises can be bathed a few times a week in shallow water to encourage hydration.
Hydration is important for healthy growth and Kidney function.
Supplements
Correct supplementation supports shell and bone development.
Calcium
- Lightly dust food 4-5 times per week
- Provide a cuttle bone
Vitamin D3
- Only if artificial UVB is used
- Lightly dust 1-2 times per week
- Not required if living outdoors with natural sunlight
Feeding Overview
Horsfield tortoises are primarily herbivorous grazers.
Diet should consist mainly of:
- Fresh weeds
- High-fibre plants/flowers
- Some dried weeds
Avoid:
- Fruit and vegetables
- High-protein foods
- Supermarket lettuce as staple
- Pelleted diets as main food source
Growth/Health
It is important to track your tortoises:
- Weight
- Straight carapace length
- General Health observations
If you are concerned about your tortoises health, always seek a medical opinion from a reptile veterinarian.
You can download our printable Hermanns Tortoise Health Chart below.
Brumation (Hibernation)
Brumation is the natural winter dormancy period of some tortoises such as Horsfields. In the wild, they retreat underground during colder months when temperatures drop and food becomes scarce.
For this species, brumation is part of their natural annual cycle.
⚠️ Important: Not Every Tortoise Should Brumate
A tortoise should only brumate if:
- ✅ It is healthy
- ✅ It has good body weight
- ✅ It is parasite-free
- ✅ It has been properly prepared
Do not brumate if:
- ❌ Underweight
- ❌ Recently ill
- ❌ Respiratory symptoms
- ❌ Runny nose or eyes
- ❌ Soft shell issues
- ❌ Poor growth
A pre-brumation health check with a reptile vet is strongly recommended.
How Long?
Typically:
- 8–12 weeks
Temperature Range
3°C – 7°C
- Below 2°C = risk of freezing
- Above 8°C = metabolism rises and fat stores are depleted
Stable temperature is critical.
Preparation Phase (Autumn)
Preparation is gradual and essential:
- Reduce feeding as temperatures drop.
- Allow natural gut emptying.
- Continue offering water.
- Maintain hydration.
Hydration before dormancy is vital.
Brumation Methods
Common methods include:
- Outdoor natural brumation (secure, frost-protected housing)
- Refrigeration method (temperature-controlled and monitored)
The key principles:
- Stable temperature
- Good ventilation
- Dry but not dehydrating environment
- Regular monitoring
UK Keepers – Important Consideration
The UK climate is cooler and wetter than their natural Mediterranean habitat.
Outdoor brumation must include:
- Secure predator-proof enclosure
- Excellent drainage
- Frost protection
- Dry, insulated overnight housing
In some regions, controlled brumation indoors may be safer.
Monitoring During Brumation
Weigh before brumation begins.
During brumation:
- Check periodically (without disturbing excessively)
- Weight loss should be minimal
- Excessive weight loss requires immediate action
Download Brumation Monitoring Chart below