It's treated as an annual in much of the country, but it is a perennial in USDA Hardiness Zones 9 to 11. In cold climates, ...

An annual in northern climates, mandevilla is actually a tender tropical perennial vine that will last indefinitely if temperatures remain above 50 degrees F. Mandevilla is often sold as a patio ...

However, in cooler climates, they are often treated as annuals unless brought indoors ... If you successfully plant your mandevilla in a shadier area, the plant can still survive, but it may ...