Alfalfa

Hermann's Tortoise

Testudo hermanni

No explicit listing for Hermann's Tortoise in the available sources, but Tortoise Trust warns that high-protein foods risk renal damage in low-protein Mediterranean herbivores with a target of 2–6% protein wet basis. The poor Ca:P ratio (0.46:1) further conflicts with the recommended minimum of 1:1 per Merck Vet Manual.

Greek Tortoise

Testudo graeca

Greek Tortoises are Mediterranean low-protein herbivores; Tortoise Trust identifies legumes and high-protein foods as high-risk for this species group, and T. graeca is specifically noted as vulnerable. The poor Ca:P ratio and elevated protein content warrant caution despite no direct toxic mechanism.

Sulcata Tortoise

Centrochelys sulcata

ReptiFiles explicitly lists alfalfa as safe for Sulcata, and Merck Vet Manual recommends grass/alfalfa hay specifically for Sulcata and Leopard Tortoises. However, the Ca:P ratio of 0.46:1 is poor for a species requiring high calcium, and the high protein content should be managed by keeping alfalfa as a supplement rather than a staple green.

Leopard Tortoise

Stigmochelys pardalis

Merck Vet Manual specifically recommends grass/alfalfa hay for Leopard Tortoises alongside Sulcata. Tortoise Trust flags Leopard Tortoises as particularly vulnerable to goitrogens and high protein; while alfalfa is not a noted goitrogen, the low Ca:P ratio and relatively high protein content warrant moderation.

Russian Tortoise

Agrionemys horsfieldii

ReptiFiles explicitly lists alfalfa as safe for Russian Tortoises, and Merck Vet Manual supports grass/alfalfa for larger tortoises. However, the Ca:P ratio of 0.46:1 is well below the Tortoise Trust target of 3.5:1, and the high protein content (~25% dry weight) risks renal strain if fed in excess for this low-protein species.

Red-eared Slider

Trachemys scripta elegans

ReptiFiles lists alfalfa as safe for herbivore tortoises and Tortoise Trust endorses alfalfa hay broadly; for omnivorous Red-eared Sliders, the plant component benefits from varied leafy greens. The protein content is not a concern for this omnivore species, and alfalfa poses no identified toxicity.

Yellow-bellied Slider

Trachemys scripta scripta

Yellow-bellied Sliders follow the same dietary pattern as Red-eared Sliders per source context, and alfalfa is appropriate as a minor leafy green component for the plant portion of their diet. No toxicity or contra-indication is identified in any available source for this species.

Painted Turtle

Chrysemys picta

Tortoise Trust notes that aquatic plants and salad should be freely available for painted turtles, and alfalfa fits within this category as a leafy green. No contraindication exists in the sources, and the moderate protein content is acceptable for this omnivore species.

Eastern Box Turtle

Terrapene carolina

ReptiFiles describes Eastern Box Turtles as omnivores with a 50% plant diet component; alfalfa is an appropriate leafy green with no identified toxicity for this species. The elevated protein content is not a concern given this species' omnivorous tolerance and the protein is plant-derived.

Red-footed Tortoise

Chelonoidis carbonarius

Red-footed Tortoises are omnivores with broader dietary tolerance than strict Mediterranean herbivores, and the moderate protein content of alfalfa is not a concern for this species. No source explicitly lists it as unsafe for Red-footed Tortoises, and its nutritional profile as a leafy green is acceptable within the 60% plant matter allocation.