Mexican Orange Blossom, also commonly known as choisya or simply Mexican Orange, is a native US shrub that prefers milder winters. Even established shrubs are not very cold-hardy, making it necessary to overwinter Mexican Orange Blossom in colder climates.
The evergreen shrubs are suited to US hardiness zones 7-10. They can handle temperatures around 25-30ºF but only tolerate brief drops in temperature down to 5-10ºF. If you live in colder zones and want to enjoy the fragrant foliage and flowers year after year, then you may need to shield plants in the ground, or give shrubs in containers shelter from the winter cold.
