Ocotilla - This is a really cool neutral plant that adds a vertical element and height to the garden, yard, and landscape. It does well in the heat and harsh soil. Other than when it is in bloom the Ocotillo is a grayish neutral color that goes well in most any Southwest, desert, Arizona, or New Mexico landscaping.image by JustTooLazy, via Flickr
Beautiful, colorful landscaping! The tall grass is purple fountain grass (Pennisteum sectaceum 'Rubrum'), available from bustaniplantfarm.com (image credit). Looks like coleus and purple heart, and maybe begonias?