Dipladenia (Mandevilla) Care: Tropical Vine for Summer Color

Dipladenia (now often classified as Mandevilla) is a glossy-leaved, twining vine with trumpet-shaped flowers in pink, red, and white all summer. Native to Brazil and Bolivia, it's a heat-lover that moves indoors for winter in temperate zones.

Light and Temperature

Bright light, no direct midday sun. Summer: 65–85°F (18–29°C) for bloom. Winter: cool rest at 55°F (13°C), bright light. Below 50°F (10°C) risks damage.

Support and Pruning

Provide a trellis or stake. Prune in spring to shape and encourage bushiness. Pinch tips for more branches = more flowers.

Water and Feed

Keep evenly moist in summer; reduce in winter. Feed every 2 weeks spring–fall with high-phosphorus fertilizer for blooms.

Propagation

Spring cuttings (7 cm), angled cut, root in peat/sand mix under humidity dome. Bottom heat speeds rooting.

Winter Care

Bring inside before frost. Cut back by 1/3. Water sparingly. Keep cool and bright. Resume normal care in spring.