January 26, 2023
Mandevilla, Rocktrumpet, Dipladenia

Mandevilla from my roof garden in Los Angeles

Mandevilla is a vine native to Southwestern United States, Mexico, Central America, and South America. Most probably its origin can be found in the forests in Brazil. It was named after a British diplomat who was also a plant collector named Henry Mandeville. Mandevilla belongs to the Apocynaceae family of plants.

Mandevilla x amoena ‘Alice du Pont’ is a frost-tender evergreen plant. It grows up to 7m or 22ft. It is also known as Dipladenia or Rocktrumpet. It is a large woody climber. Mandevilla x amoena ‘Alice du Pont’ flowers are rather impressive and eye-catching. They are trumpet-shaped, and pink. They are almost 4″ or 10cm across. Mandevilla x amoena ‘Alice du Pont’ flowers from spring to Autumn. Mandevilla leaves are oval and glossy. Help support this plant so it can climb, you can use trellis or ties to secure it to some sort of support.

Mandevilla
Mandevilla from my roof garden in Los Angeles

How to grow Mandevilla x amoena ‘Alice du Pont’:

Grow Mandevilla in full or partial sun. Plant it in fertile, moist, and well-drained soil. Keep it away from the very strong sun at least part of the day.

Plant outdoors in temperate climates. In the colder regions, keep it in a container so you can move it indoors when the cold begins. Mandevilla tolerates temperatures down to 50°F or 10°C. If you are in a dry climate then water regularly. Prune to shape Mandevilla x amoena ‘Alice du Pont‘, This will help make it bushier. It tolerates heavy, pruning if necessary. Do not fertilize in the winter. Watch out for mealybugs.

Propagate Mandevilla x amoena ‘Alice du Pont’ from seeds in spring or softwood cuttings in summer.

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