By Ilana Goldowitz Jimenez, Plant Scientist & Writer If you live in a coastal region with salty soil, or if your property is exposed to direct salt spray, it can be difficult to find interesting landscape plants that will thrive. The Geiger tree (Cordia sebestena) might be the tree for you. It can grow in sandy, salty, alkaline, and dry soils. It can grow as a street tree in a confined space. And it’s one of the best flowering trees for direct salt spray. But it cannot tolerate any frosty weather. Geiger Tree Info So, what is a Geiger tree? It is a relatively small tree with orange flowers and evergreen leaves. It is also known as scarlet cordia or orange cordia. Several related trees in the Cordia genus feature white or yellow flowers and enjoy similar conditions. Geiger trees are native to the Caribbean islands and possibly to Florida.