What should I feed my tortoise every day?

A varied mix of high-fibre, low-protein leafy plants and safe weeds such as dandelion, plantain and clover, gathered away from roads and treated ground. Adjust for your species.

Can tortoises eat lettuce?

In small amounts as part of a varied diet, but it is mostly water. A tortoise fed largely on supermarket salad is being underfed even though it appears to be eating.

Can tortoises eat fruit?

For the common Mediterranean species, only occasionally at most. Sugary food upsets gut fermentation in animals not adapted to it. Some forest species tolerate more — identify your species first.

Why is my tortoise’s shell lumpy?

Pyramiding is usually a husbandry signal — often too much protein, too little fibre, or lighting and humidity that do not suit the species. It does not reverse, so it is worth getting advice early.

Do tortoises need calcium supplements?

Generally yes, alongside correct UVB lighting — without UVB a tortoise cannot use dietary calcium properly. Cuttlefish bone in the enclosure is a common way to allow self-regulated intake.

What do tortoises eat?

Most tortoises kept in the UK are herbivores that evolved on tough, fibrous, low-nutrient plants. The commonest mistakes are feeding too much fruit, relying on supermarket salad, and offering protein — and the damage those cause is slow, permanent and largely preventable.

The basic diet

High-fibre, low-protein, calcium-rich leafy plants. Weeds are ideal: dandelion, plantain, clover, sow thistle, hawkbit and bramble leaves are all commonly recommended, gathered from ground that has not been treated with chemicals and away from roadsides.

Supermarket salad — iceberg lettuce especially — is mostly water and provides very little. It can be part of a varied diet in small amounts, but a tortoise fed on it alone is being underfed while appearing to eat.

Fruit should be occasional at most for the common Mediterranean species. Sugary food disturbs gut fermentation, and these animals are not adapted to it.

Species matters. Mediterranean tortoises, leopard and sulcata tortoises, and forest species such as red-foots have genuinely different requirements. Identify your species and feed for it rather than for "tortoise".

Calcium, light and shell growth

Calcium supplementation and correct UVB lighting are as important as the food itself. Without UVB a tortoise cannot use dietary calcium properly, however good the diet is.

Cuttlefish bone left in the enclosure is a common way to allow self-regulated calcium intake, alongside a supplement used as your vet or a specialist advises.

Lumpy, pyramided shell growth is usually a husbandry signal — commonly too much protein, too little fibre, or humidity and lighting that do not match the species. It does not reverse, which is why getting it right early matters.

What to avoid

Animal protein of any kind for the common herbivorous species — no dog or cat food, no meat. It is a frequent cause of long-term kidney and shell problems.

Plants that are toxic or high in oxalates. Buttercup, foxglove, daffodil and ivy are among those to avoid, and rhubarb leaves are dangerous. If you are not certain what a plant is, do not feed it.

Anything gathered from verges, treated lawns or where dogs are walked.

Bread, pasta and other human staples. They are not food for a tortoise even in small amounts.

Common questions

What should I feed my tortoise every day?: A varied mix of high-fibre, low-protein leafy plants and safe weeds such as dandelion, plantain and clover, gathered away from roads and treated ground. Adjust for your species.
Can tortoises eat lettuce?: In small amounts as part of a varied diet, but it is mostly water. A tortoise fed largely on supermarket salad is being underfed even though it appears to be eating.
Can tortoises eat fruit?: For the common Mediterranean species, only occasionally at most. Sugary food upsets gut fermentation in animals not adapted to it. Some forest species tolerate more — identify your species first.
Why is my tortoise’s shell lumpy?: Pyramiding is usually a husbandry signal — often too much protein, too little fibre, or lighting and humidity that do not suit the species. It does not reverse, so it is worth getting advice early.
Do tortoises need calcium supplements?: Generally yes, alongside correct UVB lighting — without UVB a tortoise cannot use dietary calcium properly. Cuttlefish bone in the enclosure is a common way to allow self-regulated intake.

Sources

Written against guidance published by UK veterinary and welfare organisations. Always confirm specifics with your own vet.

Written by Matt Garnett, who runs Giddy Pets and is a lifelong pet owner — not a vet. This is general information, not veterinary advice, and it cannot replace an examination by the vet who knows your animal. How we write these guides.