A Guide to Growing and Caring for Dipladenia (Mandevilla) Plants in Your Garden

These plants are valued for their beautiful and vibrant trumpet-shaped flowers, which come in various colors

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By Alex

dipladenia

Dipladenia (o Mandevilla) is an evergreen climbing plant. Here’s how to care for it to enhance walls and terraces. Let’s explore it together through photos and videos.

Origin and Appearance

Dipladenia, also known as mandevilla, belongs to the Apocynaceae family. Originally from Latin America, it doesn’t require particular care and attention, ensuring its widespread cultivation.

The flowers are large and very colorful, with a characteristic funnel shape. They quickly fill gardens and terraces, emitting a pleasant scent. The leaves have an intense green color.

It can be grown in hanging pots, on balconies and terraces, or as a climbing plant on walls, pergolas, and fences. In the latter case, the addition of supports is essential.

Warning: Exercise caution to avoid accidental ingestion of any parts of this plant, as it is highly poisonous, even to humans.

Dipladenia Care and Cultivation

Dipladenia thrives in bright positions, preferring direct sunlight. If placed in the shade, the flower production may decrease in favor of abundant leaf growth.

It requires high humidity, so when growing it in a pot, it’s advisable to leave some gravel in the saucer with a small amount of water.

The soil should be rich in organic substances, comprising garden soil, leaves, peat, and a bit of sand.

Watering should be generous in spring and summer, gradually decreasing with the arrival of autumn.

Fertilization is necessary every week during the summer, while in winter, once a month will suffice.

climbing dipladenia
Dipladenia is a climbing plant.

Dipladenia: Classification

The most popular species within the Dipladenia genus is the Mandevilla (Dipladenia splendens). However, it’s worth noting that Mandevilla plants were reclassified from the Dipladenia genus to the Mandevilla genus. Therefore, you might find these plants referred to as Mandevilla rather than Dipladenia in more recent botanical classifications. This plant comprises at least 30 different species, with the best-known ones including:

Dipladenia splendens

Originating from Brazil, it has large, pink, and highly fragrant flowers, along with very shiny leaves.

However, there are also other unique species suitable for enhancing not only outdoor spaces but also the interiors of your homes. Here are some examples.

Dipladenia boliviensis

Native to Bolivia, it can grow up to 4 meters in height, featuring white flowers with a yellow throat, clustered in small groups.

Dipladenia sanderi

Also known as Red Dipladenia, it showcases red flowers with a characteristic yellow throat. It is suitable for apartment cultivation but requires ample humidity and light. The leaves are notably thick.

red dipladenia
Red dipladenia specimen.

Dipladenia Sundaville

This is another species ideal for home cultivation. The flowers come in various shades, ranging from white to pink or red. It requires ample light and should be kept away from heat sources; therefore, in winter, care should be taken not to place it near radiators or fireplaces.

Yellow Dipladenia

Yellow Dipladenia is indeed a rarity. It was recently introduced by New Plants Motril SA in Spain, a company that has also received a major award for innovation. The flowers exhibit a deep yellow color, creating a striking contrast with the rich green foliage.

yellow dipladenia

Dipladenia Flowering

Flowering takes place during the spring season and extends throughout the summer. At the end of the season, proper pruning is recommended to fortify the plant for the following year.

Trim the branches, leaving 5 centimeters from the base. If it has been grown as a climbing plant, limit yourself to removing the outermost and lateral branches.

Dipladenia in Winter: Necessary Care

During the cold season, this plant enters a phase of vegetative rest but still requires a cool climate. Therefore, it is not advisable to keep it warm indoors, as this may affect its subsequent flowering.

If the climate is mild, it can be left outside, albeit sheltered. As a rule, the temperature should not drop below 12 degrees.

Dipladenia Diseases and Natural Remedies

This plant is susceptible to attacks from aphids and scale insects. The presence of red spider mites is indicated by small dark mites on the leaves and spider webs on the lower side.

Scale insects are easily recognizable by their white or brown formations, resembling small cotton mounds on the underside of the leaf. In any case, we always recommend using natural pesticides for plants, avoiding chemical solutions from supermarkets.

Dipladenia Yellow Leaves: Causes and Remedies

The yellowing of leaves in Dipladenia can pose a concern, but understanding the causes and implementing appropriate remedies can help restore the plant’s health.

When the leaves begin to turn yellow and eventually fall off, it is often an indication that the temperature is too low or that the watering regimen is insufficient.

To address this issue, consider relocating the plant to a warmer environment, particularly if it is exposed to chilly conditions. In addition, reassess the watering routine, ensuring that the plant receives an adequate amount of water. This becomes especially crucial during the summer months when Dipladenia typically requires more hydration.

By providing a warmer setting and optimizing the watering schedule, you can effectively counteract the yellowing of leaves, promoting the overall well-being of your Dipladenia. Monitoring environmental factors and adjusting care practices accordingly will contribute to the plant’s vitality and vibrant appearance.

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