Mandevilla

Growing Mandevilla: A Comprehensive Guide for Beginners

Introduction

Mandevilla, a stunning tropical vine, is a popular choice for gardeners who love its vibrant flowers and lush foliage. This comprehensive guide will provide you with all the information you need to successfully grow and care for mandevilla plants.

Understanding Mandevilla

Mandevilla, also known as Dipladenia or Brazilian jasmine, is native to the tropical regions of Central and South America. These evergreen climbers feature trumpet-shaped flowers in a variety of colors, including red, pink, white, and yellow. Mandevilla plants thrive in humid environments with warm temperatures and well-draining soil.

How to Grow Mandevilla

Choosing the Right Environment

Mandevilla prefers a bright, humid spot, such as a heated greenhouse or conservatory. They require temperatures between 65-70°F during the day and 60-65°F at night. Ensure there is adequate humidity by misting the plants regularly.

Planting Mandevilla

• Plant mandevilla directly into a greenhouse or conservatory border, adding horticultural grit to improve drainage.
• Dig a hole slightly larger than the rootball and plant the mandevilla at the same depth it was in its original container.
• Backfill with potting mix, firm the soil around the plant, and water thoroughly.

Caring for Mandevilla

Watering and Fertilizing

• Water mandevilla regularly, especially during the spring and summer.
• Apply a monthly liquid feed during the summer months.
• Reduce watering in autumn and winter, then increase again in spring.

Pruning

• Pruning is essential for maintaining the size and health of mandevilla plants.
• Trim back overly long shoots by one-third to encourage new growth.
• Remove overcrowded or weak shoots to promote a compact and tidy appearance.
• Spur prune stems in late winter to early spring to encourage flowering.

Propagating Mandevilla

From Cuttings

• Take 6-inch cuttings from healthy stems and remove the lower leaves.
• Dip the cut end in rooting hormone and plant it in a moist, well-draining potting mix.
• Keep the cuttings in a propagator with bottom heat of 68-77°F.
• Cuttings should start showing signs of growth after about two weeks.

From Seed

• Soak mandevilla seeds in water for 12 hours before planting.
• Sow seeds in moist, well-draining compost and cover lightly.
• Place in a propagator with temperatures between 64-73°F.
• Pot seedlings into individual pots once they have at least two pairs of leaves.

Pests and Diseases

Mandevilla can be susceptible to pests such as aphids, mealybugs, and spider mites. To control these pests organically, use insecticidal soap according to the instructions on the packaging.

Varieties of Mandevilla

There are numerous varieties of mandevilla available, each with its own unique characteristics:

• Mandevilla ‘Fuchsia Flammé’: Vibrant pink flowers with a long blooming period (Height x Spread: 23 ft. x 1.6 ft.)
• Mandevilla ‘Bloom Bells Red’: Crimson blooms with a long blooming period (H x S: 6 ft. x 1.6 ft.)
• Mandevilla sanderi ‘Bloom Bells White’: Bright white flowers against glossy, dark foliage (H x S: 6 ft. x 1.6 ft.)
• Mandevilla ‘Sundaville Flamingo Pink’: Unusual flamingo pink blooms (H x S: 3.3 ft. x 1.6 ft.)

Conclusion

Growing mandevilla is a rewarding experience that can add a touch of tropical beauty to your greenhouse or conservatory. By following the tips and advice provided in this guide, you can successfully cultivate healthy and vibrant mandevilla plants that will bring you years of enjoyment.