Guayacan is a shrub that can be trained as a small tree. This native of Mexico is drought tolerant and cold deciduous, and therefore needs very little water (if any at all) during the Winter once well established. This is not a plant you will find in many nurseries, however, gardeners who have gotten their hands on a Guayacan have often been perplexed as to why this species is not more readily available to the public as it is both beautiful and tough.