On a warm day in April, Twila Cassadore piloted her pickup truck toward the mountains on the San Carlos Apache Reservation in Arizona to scout for wild edible plants. A wet winter and spring rains had transformed the desert into a sea of color: green …On a warm day in April, Twila Cassadore piloted her pickup truck toward the mountains on the San Carlos Apache Reservation in Arizona to scout for wild edible plants. A wet winter and spring rains had transformed the desert into a sea of color: green …