Can Russian Tortoises eat Mustard Greens?
Brassica juncea
Safety verdict
Caution
Why
[confidence: high] [source: The Tortoise Table; Tortoise Trust goitrogen article] Goitrogenic brassica green; acceptable occasionally in rotation but not a daily staple for Russian tortoises.
How much / how often
Occasionally; part of varied greens mix; not more than weekly
Nutrition (per 100 g)
115 mg
Calcium
58 mg
Phosphorus
2.0:1
Ca:P ratio
low
Oxalate
2.9 g
Protein
3.2 g
Fiber
Reviewed by admin on May 2026
Not veterinary advice. This information is for educational purposes. Always consult a qualified exotic animal veterinarian for guidance specific to your pet.