Can Russian Tortoises eat Wood Sorrel?
Oxalis acetosella
Safety verdict
Toxic
Why
[confidence: high] [source: The Tortoise Table plant database (tortoisetable.org.uk), peer-reviewed herpetology or veterinary toxicology journal reviewing oxalate toxicity in chelonians, exotic reptile vet review specializing in tortoise nutrition.] Wood Sorrel (Oxalis spp.) contains high levels of soluble oxalic acid, which binds calcium and prevents its absorption, posing a significant risk of hypocalcemia and metabolic bone disease in Russian Tortoises. Repeated or significant ingestion can also contribute to oxalate crystal accumulation in the kidneys.
How much / how often
Should be avoided entirely; no safe quantity has been established for Russian Tortoises given the known oxalate toxicity mechanism.
Preparation
No preparation method adequately neutralizes soluble oxalates in Oxalis spp. to a safe level; avoidance is recommended.
Nutrition (per 100 g)
90 mg
Calcium
36 mg
Phosphorus
2.5:1
Ca:P ratio
high
Oxalate
1.5 g
Protein
2 g
Fiber
Reviewed by admin on May 2026