Can Hermann's Tortoises eat Rhubarb?
Rheum × hybridum
Safety verdict
Toxic
Why
Leaves and stalks contain very high oxalic acid — potentially fatal. All parts are dangerous.
Sources
The Tortoise TableThe Tortoise Table ↗
Rheum sp. — toxic. Very high oxalic acid, particularly in leaves. Potentially fatal.
Not veterinary advice. This information is for educational purposes. Always consult a qualified exotic animal veterinarian for guidance specific to your pet.