Kidneywood is a native of southern Arizona and is the host for at least one butterfly species. In Arizona the E. orthacarpa is listed in the American Forests Champion Trees, as it is listed as the largest known tree … It can grow to 10 feet, often with several trunks, and is particularly attractive when pruned into a small tree. Texas Kidneywood, Rock Brush Eysenhardtia texana . Kidney. called: Kidney Wood or Palo Dulce. Dedicated to providing quality trees to the Landscape Industry that are appropriate to the Desert Southwest.Trees for Beautiful Southwestern Landscapes from Arid Zone Trees can be found in the West's premiere landscapes (Arizona, California, Nevada, Texas) on golf courses, commercial, municipal, and residential landscape projects, AZT offers landscape professionals, landscape … Also. Natural History: The kidneywood tree is native to the U.S. and Southwest Mexico. It is a deciduous tree with shaggy tan bark and fragrant white flowers. A Kidneywood is in the Arizona Kidneywood grows upright and reaches 15 feet tall. Fabaceae (Leguminosae) Texas kidneywood is an open, airy shrub with spikes of fragrant white flowers and lacy compound leaves. It has fragrant white flowers that smell of vanilla and are attractive to butterflies. A deciduous; delicate tree-shrub with fragrant white flowers. Eysenhardtia polystachya Fabaceae Family ( Pea ) Kidneywood. Kidneywood. Also a Sonoran native, it will take full sun, reflected heat, poor soils, and cold weather. The common name, kidneywood, refers to its historic uses for medicinal purposes. tree-shrub with fragrant white flowers. wood or palo dulce (Eysenhardtia polystachya) is a deciduous; delicate. It is easy to maintain, thornless, and quite clean because its leaflets and seeds are small and don’t create much litter.