Climbing plants

Wintering Dipladenia - How the Mandevilla survives the cold season


If you want to get your Diplandenia through the winter undamaged, you should take care of a suitable winter accommodation in good time. But be careful - there is a lot to consider here.

© Mathias Karner -

In the beginning, Dipladenia (Mandevilla) were cultivated exclusively as houseplants. This happened for a good reason, because the plants come from the tropics of South America and cannot tolerate the cold. In the meantime, however, it has become common practice to also cultivate the plants on the balcony and terrace. During the summer months, the flowering exotic also offers climatic conditions for outdoor cultivation in our latitudes. Robust and fast-growing hybrids were bred. There are a few things to consider for the wintering of the otherwise fairly easy-care plant.

Create optimal conditions

The most important requirements for the successful wintering of Dipladenia:

  • bright
  • warm
  • Frost free
  • pour little

The tropical plant not only doesn't like frost, it should move into the house in late summer for the winter. At night, temperatures can drop below seven degrees in early September and there is a risk that the plant will be damaged.

Wintering Mandevilla - which temperatures are optimal?

In winter the Dipladenia has to go into the house - © Reinhold / The temperature in the winter quarters should be good for plants that have spent the summer on the balcony or terrace 10 to a maximum of 15 degrees lie. If the plant is warmer, it will only produce a few flowers in the following year or the flower will fail completely.

" Tip: Species cultivated all year round as houseplants do not necessarily have to change location in winter and can still be cultivated at room temperature. Usually houseplants are sufficiently adapted and the warmer winter stand has no effect on the flower.

Wintering Dipladenia - the optimal location

  • As an evergreen plant, Dipladenia will not shed its leaves even in winter and therefore needs a bright location.
  • However, the plants must be protected from direct sunlight.
  • The plants also cannot tolerate drafts at their winter location.
  • If the plant is too dark, horny shoots appear, which deprive the Mandevilla of the power to bloom.

Water and nutrient requirements in winter

In winter, the plant takes a break. The growth is almost completely stopped. As early as August, the Dipladenia is no longer fertilized so that it can prepare for the rest phase in the next few months and there is no sprouting caused by over-fertilization, which robs the plant of its strength for the formation of the buds.

The Mandevilla is poured moderately. However, the earth should not dry out completely even in winter. Avoid waterlogging. This is made easier if a drainage of pottery shards is placed in the planter before planting.

" Tip: Maintenance errors in winter make Dipladenia susceptible to diseases and pests. The plants should therefore be checked regularly.

Wintering Dipladenia - Overview of measures

Location»A bright location is important for the evergreen plant.
»The temperatures should be between 10 and 15 degrees.
»Dipladenia should be protected from direct sunlight in winter.
»Drafts or dry heating air do not get the plant.
Watering and fertilizing»Watering continues in winter, too, but less than during the growth phase.
»The floor shouldn't dry out completely.
»The plant is not fertilized in the winter quarters because it is in the resting phase and cannot process any nutrients.
Care for»No further maintenance measures are necessary.
»It is advantageous to regularly check the plant for pests and diseases, which occur preferentially during the winter months.

Avoid maintenance errors in winter

Dipladenias are quite robust and easy to care for. Diseases and pests are the exception. Maintenance errors during the winter months are the most common cause of fungal diseases and pest infestation.

Yellow leaves - what now?

If yellow leaves appear on the plants in the winter quarters, the problem is usually to be found in the location. The yellowing of the leaves can indicate that the winter conditions are too cool. Due to the large biodiversity, different demands on the temperature can occur. A somewhat warmer location can usually help. If the leaves lose their shape and start to curl, the location of the plant that is too bright can be concluded.

Detect and prevent fungal and pest infestation

In general, the plants in the winter quarters should be checked frequently. Fungi and pests can appear if the Dipladenia is too moist or lacks fresh air.

The following can occur on pests:

  • aphids
  • spider mites
  • Scale insects
  • Mealybug

If the infestation is recognized in good time, treatment with the water jet can have an effect. Aphids can also be treated quite easily with home remedies such as nettle stock or onion lye. If the infestation is recognized too late, a commercially available pesticide must usually be used.

<»Attention: Infested plants must be isolated so that no other indoor plants are infected.

Winter is coming to an end - and now?

If winter is coming to an end, the Mandevilla will indicate this by the appearance of new shoots. Now the plant can move to a warmer location and slowly be prepared for summer - on the balcony and terrace. A little more is watered again and with the formation of new shoots the fertilization of the plants can be resumed. The application of liquid fertilizers at 14-day intervals promotes flowering. The ice saints should wait until the Dipladenia is finally allowed to move outdoors.