Beet Greens

Red-eared Slider

Trachemys scripta elegans

High oxalate — same concern as spinach. Occasional very small amounts only.

Yellow-bellied Slider

Trachemys scripta scripta

High oxalate — same concern as spinach. Occasional very small amounts only.

Painted Turtle

Chrysemys picta

High oxalate — same concern as spinach. Occasional very small amounts only.

Eastern Box Turtle

Terrapene carolina

[confidence: high] [source: USDA FoodData Central oxalate data; Tortoise Trust calcium and oxalate article] High oxalate content binds calcium and can impair absorption over time; feed sparingly as part of a varied greens rotation.

Greek Tortoise

Testudo graeca

[confidence: high] [source: The Tortoise Table plant database; USDA FoodData Central oxalate data; Tortoise Trust calcium article] Very high in oxalic acid; can severely impair calcium absorption in tortoises; avoid or feed only in trace amounts.

Leopard Tortoise

Stigmochelys pardalis

[confidence: high] [source: Reptifiles leopard tortoise care; USDA FoodData Central oxalate data; Tortoise Trust calcium article] Very high oxalic acid; impairs calcium absorption; avoid for leopard tortoises already sensitive to oxalate toxicity.

Red-footed Tortoise

Chelonoidis carbonarius

[confidence: high] [source: Reptifiles red-footed tortoise care; USDA FoodData Central oxalate data] High oxalate content; can bind calcium; feed very sparingly as part of varied greens rotation.

Russian Tortoise

Agrionemys horsfieldii

[confidence: high] [source: The Tortoise Table; USDA FoodData Central oxalate data; Tortoise Trust calcium article] Very high in oxalic acid; severely impairs calcium absorption; avoid for Russian tortoises.

Hermann's Tortoise

Testudo hermanni

[confidence: high] [source: The Tortoise Table; USDA FoodData Central oxalate data; Tortoise Trust calcium article] Very high in oxalic acid; can severely impair calcium absorption; avoid or feed only in trace amounts infrequently.

Sulcata Tortoise

Centrochelys sulcata

[confidence: high] [source: Reptifiles sulcata tortoise care; USDA FoodData Central oxalate data; Tortoise Trust calcium article] Very high oxalic acid; severely impairs calcium absorption; avoid for Sulcata tortoises.