I wanted to become more of a gardener this Spring, and so I purchased a lot of the plants from Joe's edible plant list. I bought as many plants from the list as I could find..both to beautify the garden and to feed the torts. You name it - nasturtiums, hibiscus, hollyhock, sedums, iceplant, pansies, aloe vera, butterfly bush, grapevine, daylily, and christmas cactus.
I'm finding that my torts have very different tastes. For instance, one likes the nasturtium flowers, but the others eat it only if they're desperate. They ALL go crazy over the sedum I bought (I bought 2 types, and they only like one of them...don't know what it's called, but I'll send you a video if interested). That's probably their #1 from the list above. They nibble on the flowers or some leaves of the other plants, but they go crazy over the sedum.
In addition, I feed them lettuces, dandelion, grass, clover, chia, chickweed, kale, collard greens, plantain.