Ms. Mesquitey and I like the idea of regional crayons. The colors of your home place, of your own biotic community. When we saw the fairy dusters (Calliandra eriophylla) blooming on that rocky slope we realized that maybe it would need a few different crayons. Yay! I don’t know it this interests you, but fairy duster is pretty easy to grow from seed. You just need to get the little bean pods before they snap open and send seed shooting across the desert where native critters eat them. Oh dear! But hey, if you don’t feel like gathering and germinating…