The folks at Native Seeds/SEARCH are the real deal. Amazing selection of desert adapted seeds of all kinds, including rare kitchen garden edibles cultivated by Native Americans in the southwest. A nonprofit with a mission of crop diversity and regional seed sovereignty.
Here’s their listing for their Desert Tortoise Mix:
A mix of Southwest native wildflowers favored as food by desert tortoises. Varieties are fast growing and can tolerate munching abuse. This mix is great for any garden!
Mix includes 8 species including Desert Marigold, Mexican and/or White Evening Primrose, Globemallow, Summer Poppy, Parry’s and Palmer’s Penstemons, Desert Senna, and Desert Lupine.
Available in two sizes: Small (1.5 g and covers approximately 30 sq. feet) ($2.00), and Large (0.5 oz and covers approximately 100-200 sq. feet) ($12.00).