Queen Palm Tree. The Queen Palm (Syagrus romanzoffiana) tree is one of the most popular ornamental palms used in landscaping. In the United States, it can be found filling the home landscapes of Southern California and the Gulf states. It is native to Brazil, Argentina, Uruguay, and Paraguay. It has spread to other parts of the world and is even considered an invasive species in Florida.Queen Palms make a wonderful addition to garden landscapes and can tolerate a variety of climates. The species does require some consideration for their specialty care and maintenance. Once they grow too high, you will have to hire a professional to prune or treat the tops of the trees.