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Can Tortoises Eat Sweet Potatoes? Vet-Approved Nutrition Facts & FAQ

Jana Blagojevic

By Jana Blagojevic


Vet approved

Dr. Karyn Kanowski Photo

Reviewed & Fact-Checked By

Dr. Karyn Kanowski

BVSc MRCVS (Veterinarian)

The information is current and up-to-date in accordance with the latest veterinarian research.

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Being confused about the ideal diet for your pet is a normal and common occurrence. Being a tortoise parent can be particularly confusing, which is why you probably find yourself experimenting with different types of food. As you probably already know, tortoises are primarily herbivores, feeding on hay, grass, and herbs, although certain species are omnivorous. Being that tortoises can also eat a range of vegetables, you may want to know if sweet potatoes are safe for your tortoise.

Sweet potatoes are generally safe for your tortoise, provided you feed them moderately, as part of a balanced diet. Read the article below to learn more about the benefits of sweet potatoes for tortoises, and how to feed them.

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Ideal Tortoise Diet

Since tortoises are primarily herbivores, they feed on vegetation in the wild, including the leaves, flowers and stems of plants. The ideal tortoise diet can vary between species, so it is essential to correctly identify your pet. In the wild, tortoises feed on more than 200 plant species throughout the year, although certain tortoise species, such as Leopards and Sulcatas, base their diet around grass. Tortoises generally don’t center their diets around only one plant, and instead get their nutrients from a diverse plant selection. It is vital to keep your tortoise’s diet as close to their natural diet as possible, so try to feed them a variety.

A tortoise’s diet will also vary depending on the time of year. In the spring, they will try to find food with higher protein and moisture content, while later in the year, they search for food with lower protein content. This way, they ensure they have a well-balanced intake throughout the year, with enough essential mineral trace elements to support healthy bone development and reproduction.

Herbivore digestive systems are not designed to consume food with a lot of saturated fat or protein content. A general rule for feeding tortoises is to ensure they get food that is high in fiber and low in protein.1 It is also important to be aware of the vitamin and mineral content of the food you provide, as foods with a higher proportion of phosphorus to calcium can lead to metabolic bone disease, a potentially life-threatening illness.

Plants that are safe to include in a tortoise’s diet include:

  • Petunia
  • Geranium
  • Clover
  • Dandelion
  • Kale
  • Dalia
  • Pansies
  • Rose petals
  • Violet
  • Wild chicory
  • Heather
  • Evening primrose

Vegetables that are safe, but should be fed only as treats:

  • Pumpkin
  • Bean
  • Chinese Cabbage
  • Courgette
  • Dill
  • Lamb’s Lettuce
  • Sweet Potato
  • Turnip
A little turtle eating carrots and broccoli from a rocky dish in a terrarium with red light
Image Credit: Wirestock Creators,Shutterstock

Are Sweet Potatoes Safe for Tortoises?

Sweet potatoes are delicious veggies that are readily available and easy to prepare. Since people adore sweet potatoes for their flavor, you might think your tortoise pet may enjoy it too.

Before offering sweet potato to your tortoise, it is crucial to learn how to prepare it properly. Firstly, you need to give a good clean and scrub the sweet potato and then cut it into small pieces. It is best to offer raw sweet potato, or if your tortoise pal seems to struggle with this, you can even cook it just enough to soften it a little.

We mentioned earlier that the proportion of calcium (Ca) to phosphorus (P) is important when considering foods appropriate for your tortoise. The ideal Ca:P ratio for a tortoise is 2:1. Sweet potatoes have a ratio of 1:1.5, which means that, if fed in too high an amount, they can lead to the development of metabolic bone disease.

The sweet potato is also very high in starchy carbohydrates, so you shouldn’t include it in the everyday diet of tortoises. However, feeding your tortoise a few small pieces of sweet potato as treats once a month should be entirely safe. Avoid feeding them the leaves, as they contain high oxalate levels, which can lead to the formation of bladder stones. Remember to always keep your tortoise’s diet varied and diverse, and never to base their diet on only one plant or vegetable.

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Final Thoughts

When it comes to offering your tortoise foods that are outside their normal diet, the most important takeaway is moderation. There is no harm in keeping a few cubes aside when preparing some sweet potato for yourself, and they may even enjoy those pieces partially cooked for softness. However, this isn’t a food to be included as part of their regular diet. Don’t feed them the leaves of the sweet potato plant, as they may contain high levels of oxalates.

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Featured Image Credit: Africa Studio, Shutterstock

Jana Blagojevic

Authored by

I am a freelance writer with a restless and adventurous spirit. After graduating from the College of Fine Arts, I began searching for a medium to express my imagination. Content writing is a passion that took me by storm. When I am away from my peaceful writing nook, I work as a sculptor, painter, and woodworker in my workshop. I plan to continue nurturing my passion for writing and use it as a vessel for my neverending c...Read more

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