Getting your tortoise’s diet right is one of the most important aspects of care — and one of the most common sources of mistakes. Pet tortoises in the UK are herbivores that need a diet dominated by weeds, leafy greens, and flowers — with very little fruit and no processed human food. Here’s your complete feeding guide.
- The Golden Rule
- Safe Foods — What Tortoises Can Eat
- •Wild Weeds (best daily food)
- •Shop-Bought Greens (supplement)
- •Edible Flowers
- Foods to AVOID
- Species-Specific Notes
- •Mediterranean Tortoises (Hermann’s, Horsfield’s, Spur-thighed)
- •Tropical Tortoises (Redfoots, Yellowfoots)
- Calcium & Supplements
- How Often to Feed
- Frequently Asked Questions
- •Can tortoises eat cucumber?
- •Can tortoises eat strawberries?
- •Where can I find safe weeds for my tortoise?
- Related Reading
- • 📚 Related Reading
The Golden Rule
80% weeds and wild plants, 20% shop-bought greens. Wild plants are nutritionally superior to supermarket salads — they’re higher in fibre, calcium, and lower in sugar. A tortoise raised primarily on supermarket lettuce will develop health problems.
Safe Foods — What Tortoises Can Eat
Wild Weeds (best daily food)
| Weed | Notes |
|---|---|
| Dandelion (leaves and flowers) | Excellent calcium:phosphorus ratio, feed daily |
| Plantain (Plantago) | High fibre, widely available in UK gardens |
| Clover (white and red) | Good calcium source, feed in moderation |
| Sow Thistle | Soft leaves, well accepted |
| Hawkbit | Similar to dandelion, safe daily |
| Mallow | Flowers and leaves both safe |
| Dead Nettle | Not the same as stinging nettle, safe |
Shop-Bought Greens (supplement)
| Green | Notes |
|---|---|
| Watercress | Excellent, high calcium |
| Lamb’s lettuce | Good nutritional balance |
| Rocket (arugula) | Feed in moderation (goitrogenic) |
| Spring greens | Good fibre source |
| Pak choi | Moderate use |
Edible Flowers
Roses, hibiscus, pansies, violas, nasturtiums, and cornflowers are all safe and enjoyed. Many tortoises love bright-coloured flowers. Ensure flowers haven’t been sprayed with pesticides.
Foods to AVOID
| Food | Why |
|---|---|
| Iceberg lettuce | Almost zero nutrition, causes diarrhoea |
| Fruit (all types) | High sugar — causes gut fermentation, shell deformity. Mediterranean species should have NO fruit. |
| Cabbage, broccoli, kale | Goitrogenic — blocks thyroid function in large amounts |
| Spinach | High oxalic acid — binds calcium, causes deficiency |
| Tomato | Too acidic, low fibre |
| Avocado | Toxic to tortoises |
| Bread, pasta, rice | Cannot digest carbohydrates properly |
| Dog/cat food | Too high in protein — causes shell pyramiding and kidney damage |
| Buttercups, daffodils, foxglove | Toxic plants |
Species-Specific Notes
Mediterranean Tortoises (Hermann’s, Horsfield’s, Spur-thighed)
These are the most common pet tortoises in the UK. They need a high-fibre, low-protein, low-sugar diet based on weeds and wild plants. No fruit at all — their digestive systems are not designed for sugar. Fruit causes dangerous gut fermentation and contributes to pyramiding (lumpy shell growth).
Tropical Tortoises (Redfoots, Yellowfoots)
Tropical species can tolerate small amounts of fruit (10–15% of diet) as they encounter fallen fruit in the wild. They also require slightly more protein — occasional plain scrambled egg or a tiny amount of soaked cat food can be offered monthly. However, the majority of the diet should still be weeds and greens.
Calcium & Supplements
Calcium is critical for shell and bone health. Every tortoise needs:
- Cuttlefish bone — leave a piece in the enclosure permanently. Most tortoises nibble it as needed.
- Calcium powder — dust food lightly 2–3 times per week (e.g., Nutrobal or Arcadia EarthPro-Ca).
- UVB lighting — enables your tortoise to synthesise vitamin D3, which is essential for calcium absorption. Without adequate UVB, calcium supplementation is far less effective.
How Often to Feed
Adult tortoises should be fed daily — offer a variety of weeds and greens in the morning when they’re most active after basking. Remove uneaten food in the evening to prevent mould. Juvenile tortoises (under 2 years) can be fed twice daily in smaller portions. Avoid overfeeding — obesity is a common problem in pet tortoises and contributes to liver disease and shell deformity.
Frequently Asked Questions
Can tortoises eat cucumber?
Technically yes, but it’s mostly water with almost no nutritional value. It’s fine as an occasional hydration boost on very hot days, but should never be a regular part of the diet. Weeds and watercress are far better options.
Can tortoises eat strawberries?
Mediterranean tortoises (Hermann’s, Horsfield’s, Spur-thighed) should not eat any fruit, including strawberries. Tropical tortoises (Redfoots) can have a tiny piece very occasionally. Fruit causes gut fermentation and contributes to shell pyramiding.
Where can I find safe weeds for my tortoise?
Your own garden (if unsprayed), local parks away from roads, and hedgerows are all good sources. The Tortoise Table (thetortoisetable.org.uk) is the definitive online resource for checking whether a specific plant is safe — it has a searchable database of thousands of plants.
