Is Rio Dipladenia a perennial?
Just so, do Dipladenia come back every year?
Dipladenia is the former name of the plant, with most cultivars now properly labeled and sold as mandevilla vines. They can survive in USDA zone 8, although they may die back each year and grow as shorter plants. Proper winter care ensures that the dipladenia will survive to bloom again each summer.
Also to know is, how do you take care of a Dipladenia in the winter?
Spread 2 or 3 inches of mulch, such as leaves or straw, over top of the roots to protect them during the cold months. The dipladenia will sprout back in spring. This method of winter care only works in USDA plant hardiness zone 8. In cooler zones, dipladenias must be brought indoors for winter.
Getting a Mandevilla Plant to Bloom Use a teaspoon of Epsom salts dissolved in water once every two weeks for a month. The salt content will build up in the soil if you try this for any longer. The magnesium in the Epsom salts should get it flowering again.