Collard Greens
Brassica oleracea var. viridis
Also known as: collards, collard leaves
Safety by species
Greek Tortoise
Testudo graeca
Goitrogenic Brassica green. Excellent Ca:P ratio but limit to avoid thyroid disruption.
Sulcata Tortoise
Centrochelys sulcata
Goitrogenic when fed in excess. Very high calcium makes it useful in small amounts.
Leopard Tortoise
Stigmochelys pardalis
Goitrogenic when fed in excess. Very high calcium makes it useful in small amounts.
Hermann's Tortoise
Testudo hermanni
Goitrogenic Brassica green. Excellent Ca:P ratio but limit to avoid thyroid disruption.
Red-footed Tortoise
Chelonoidis carbonarius
Excellent calcium-rich staple green. Core of the daily salad.
Painted Turtle
Chrysemys picta
High calcium, good for shell health. Float pieces in water.
Eastern Box Turtle
Terrapene carolina
Good calcium-rich green for adults. Juveniles eat less plant matter.
Red-eared Slider
Trachemys scripta elegans
High calcium, good for shell health. Float pieces in water.
Yellow-bellied Slider
Trachemys scripta scripta
High calcium, good for shell health. Float pieces in water.