This is a tropical vine that can be used as a summer annual or house plant in your area. It grows best in full sun and will produce lots of flowers all summer long. It will die when temperatures go below freezing, but you could bring it indoors and keep it as a houseplant, although it probably won’t flower either indoors or until late in the summer next season. These plants need specific hours of daylight in order to come into bloom – they are given this at commercial growers but home owners don’t tend to supply the artificial lit “long days” turning into shorter days that bring the plant info flower. So many people who overwinter this are disappointed that although the plant lives and grows well once it’s outside again, they don’t start to flower until sometime in August. If you want one that’s going to bloom all summer, buy it fresh from a garden center every spring so it’s already flowering.
Will a mandevilla vine survive if covered agai st frost in Gauteng?