Can Greek Tortoises eat Nasturtium?
Testudo graeca · Tropaeolum majus
Caution
Weekly
Tortoise Table rates nasturtium as moderate. Greek Tortoises (T. graeca) are listed by Tortoise Trust as particularly vulnerable to goitrogenic compounds; while nasturtium is not a classic goitrogen, its mustard-oil glycosides (isothiocyanates) share structural similarities, warranting extra caution for this species. Feed sparingly as part of a varied diet.
Feeding frequency
Weekly
The short answer
Tortoise Table rates nasturtium as moderate. Greek Tortoises (T. graeca) are listed by Tortoise Trust as particularly vulnerable to goitrogenic compounds; while nasturtium is not a classic goitrogen, its mustard-oil glycosides (isothiocyanates) share structural similarities, warranting extra caution for this species. Feed sparingly as part of a varied diet.
Feeding it safely
How much / how often
What's inside
Per 100 g of raw nasturtium
120mg
Calcium
60mg
Phosphorus
2.0:1
Ca:P ratio
Low
Oxalate
2.3g
Protein
0.5g
Fiber
Backed by sources
Reviewed by basking_research · June 2026
Basking is here to help you learn — it isn't veterinary advice. For anything specific to your animal, talk to a qualified exotic-animal vet.
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