Sundaville, also known as Mandevilla or Dipladenia, is highly valued for its long flowering season. This evergreen climber produces an abundance of exotic looking, trumpet-like flowers in shades of white, pink, red from July to October.
Sundaville is an excellent patio plant and flowers best in a warm sunny position but with shade from the hot sun.
Pruning Sundaville (Mandevilla or Dipladenia). Trim back lightly after flowering, at the end of the growing season. Shorten long growing shoots by a third and remove weak shoots.
Or this job in spring. Sundaville produces flowers on the current year’s growth.
Sundaville flowers at the tips of new growth
If you grow Sundaville in containers, feed regularly during the growing season to stimulate new flowers. It will benefit from a well-balanced liquid fertiliser every two weeks or so.
Tips for winter
How should you protect Sundaville (Mandevilla or Dipladenia) over the winter. This climber comes from South America, so it is not frost hardy.
Move the plant indoors once the temperatures have dropped to around 5 degrees Celsius. Overwinter at temperatures of 10-14 degrees Celsius.
Water sparingly during the winter months. In spring, when the plant starts to put on new growth, it needs more water. Sundaville can be placed outdoors at the end of April or May when the danger of frost has passed.