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Boxing your tortoise for hibernation

This is a video to show how your tortoise should be boxed to go into the fridge for hibernation.


The breeds of tortoise that hibernate do so for health reasons. Irregular hibernation will adversely affect the tortoise’s health and lifespan.

Most Mediterranean breeds are biologically set to hibernate for a period of time; it is unnatural for tortoises to be awake and eating 365 days a year.

You cannot trick Mother Nature without consequences; if your tortoise is awake every winter, the increased food intake can lead to abnormal growth and in turn cause Metabolic Bone Disease, lumpy shells and sometimes even kidney and bladder stones.

The positives of hibernation far outweigh the negatives!

Common mistakes made include:

  • Feeding the tortoise prior to hibernation
  • Incorrect hibernation temperature i.e. above 10°c or below 0°c
  • No protection against predators (when hibernating outside)
  • Hibernating an ill tortoise

So that’s the negatives out the way, let’s look at the right way to hibernate your tortoise.

Wind Down Process


You need to completely stave the tortoise prior to the hibernation period. The starvation period should be;

7 days for tortoises up to 1 year old

10 – 14 days for tortoises aged between 2-4 years

21-28 days for tortoises older than 4 years

If your tortoise is kept outside don’t worry as you will find that the tortoise will naturally start to eat less as the weather gets colder.

Whilst going through the starvation period the tortoise must have a full bladder. We recommend daily bathing throughout the wind down process; this will ensure that the tortoise is nicely hydrated.

When your tortoise has an empty gut and a full bladder you need to be sure that you hibernate the tortoise in the right location – where your tortoise isn’t going to freeze but is also not going to wake up early due to warm weather.

The perfect temperature for hibernating is between 3-7°c constantly.

We strongly suggest the fridge method for hibernation. We find this to be the safest and most effective method available. A domestic fridge temperature is around 5°c and opening the door for a few seconds daily will ensure adequate air supply.

Brick garages can also be used, but you must be on guard as you have less control over the outdoor temperatures.

Boxing Up Your Tortoise

Place your tortoise in a tightly fitting plastic tub (such as a margarine/ ice cream tub) containing soil/compost. Place this tub in a cardboard box (such as a shoe box) containing poly chippings – these are an excellent insulation buffer – you can also use shredded paper if the chippings are not available. Ensure that these boxes are not air tight, and that they both have air holes. You can secure the lid with elastic bands.

Hibernation Time Scales

1 year = 3 weeks

2 years = 6 weeks

3 years = 10 weeks

4 years = 16 weeks

5 years and over = 22 weeks

When you hibernate your tortoise for the first time, we strongly suggest that you only hibernate for 3 weeks regardless of the age of the tortoise.

Waking Up

Immediately after awakening you should let the tortoise acclimatise at room temperature for around half an hour. Whilst the tortoise acclimatizes, turn on the basking and UV lamps in the tortoise table. We recommend that you bathe your tortoise for 10 minutes or so in lukewarm water; this will allow your tortoise to rehydrate and flush out the toxins in its body. After bathing, place your tortoise back into the tortoise table. In the days following awakening, you should increase the room temperature and bathe daily. Feeding should commence within a day or two. If your tortoise hasn’t eaten within five days of waking up after hibernation we suggest you give us a call or contact a vet for advice.