Mandevilla sanderi: complete guide to dipladenia, Brazilian jasmine vine

Overview

Mandevilla sanderi, also known as Dipladenia or Brazilian jasmine, is a spectacular flowering vine native to Brazil. This plant is prized for its stunning pink or red flowers and glossy green foliage. It is popular as a container plant, vine, and indoor specimen due to its long flowering period.

This plant produces large, trumpet-shaped flowers up to 5 cm across. The flowers appear in clusters and bloom continuously from summer through fall.

Appearance and bloom

Mandevilla sanderi grows as a climbing vine but can be trained as a shrub. The plant can reach 2-4 meters in height when supported. The leaves are glossy, elliptical, and deep green.

The flowers are the highlight of this plant. They are large, approximately 4-5 cm across, trumpet-shaped, and typically pink to red in color. Some selections are white or bicolor. Flowers appear in clusters at branch tips.

Blooming begins in May-June and continues through October or after the first frost. This makes it an exceptionally long-blooming plant.

Ideal location

Mandevilla sanderi grows best in full sun to partial shade. The plant produces more flowers with more sun, so 6-8 hours of direct sunlight is ideal. In very hot climates, light afternoon shade may be beneficial.

Indoors, the plant can grow in bright windows, though supplemental grow lights help. Outdoors, it can be trained on trellises, pergolas, or against walls.

Good air circulation is important, though avoid harsh winds.

Soil

Mandevilla sanderi grows best in fertile, well-draining potting soil. Use a mix of garden soil, perlite, and humus. For containers, use premium potting mix with extra organic matter.

The plant prefers slightly acidic soil (pH 6.0-7.0). Add compost for better moisture retention and nutrients.

Excellent drainage is essential; avoid heavy, waterlogged soils.

Watering

Mandevilla sanderi is moisture-loving and requires regular watering during the growing season. Water so the soil remains moist but not waterlogged. During summer, water more frequently.

Allow the top 1-2 cm of soil to dry between waterings. In containers, water more frequently than in-ground plants.

Reduce watering in fall and winter. Avoid leaving water on leaves for extended periods.

Pruning

Mandevilla sanderi should be pruned regularly for a full shape. Cut back branch tips in early spring to encourage lateral growth.

Remove dead or diseased wood. After flowering, long branches can be shortened to maintain shape.

The plant responds well to aggressive pruning and will regrow with more branches.

Maintenance calendar

March-April: Spring pruning, resume growth. May-June: Blooming begins, regular watering. July-August: Peak blooming, frequent watering and feeding. September-October: Continued blooming, reduce watering. November-February: Winter rest, minimal watering.

Winter hardiness

Mandevilla sanderi is frost-sensitive. The plant dies back at temperatures below 10 C. In warm climates (zone 10+), it can overwinter outdoors. In cooler regions, it must be brought indoors.

Container-grown plants can easily be moved indoors. Allow the plant to rest with minimal watering and light cooling (10-15 C).

Companion plants

Mandevilla sanderi works well with other summer bloomers. Combine with Ipomoea (morning glory), Passiflora (passion flower), or Clematis in a garden.

In containers, pair with white Euphorbia, Petunia, or Bacopa for color contrast. Silvery-gray plants like Senecio cineraria also work well.

Closing remarks

Mandevilla sanderi is a beautiful choice for anyone wanting long, spectacular blooming. With sufficient sun, water, and support, this plant thrives and flowers abundantly. The pink blooms and glossy foliage make it a true showstopper.

This plant is available at garden centers across North America and Europe. For more information, visit gardenworld.app.