From the Apocynaceae family, the Dipladenia Sanderi is a native of Rio De Janeiro, Brazil, and as such prefers warmer, sunny climates, although if kept warm, can be grown in cooler climates. It is found mainly in tropical climes, where it is warm and humid. It is an evergreen perennial.
Dipladenia can be grown in the garden, in pots and in hanging baskets, and can be grown as a houseplant, although it is a climbing, creeper vine. The "Sundaville Red" produces deep red trumpet shaped blooms, but this plant is also available in pink, yellow and white.
The Dipladenia Sanderi needs full sun/partial shade in rich, fertile, well-drained soil. Over-watering will cause the tubular roots to rot. If you have heavy soil, it is better to grow them in pots. They should be kept well watered during hot conditions (but don't overdo it), and should be cut back after flowering. In the Northern hemisphere the plant will bloom from early July to mid-September, in the Southern hemisphere it can bloom year round. (Zone 9-12). Frost tender. The Dipladenia attracts bees, butterflies and birds. It is also susceptible to aphids, mealybugs and scale.
The blooms can cause irritation to the skin if touched, and are toxic if ingested. Best to keep them out of range of small children.
In mid-Autumn the potted Dipladenia should be brought indoors until late Spring or kept in a greenhouse.