There are many different reasons why your Dipladenia may turn brown or even lose its leaves. There is not always a disease or pest infestation behind it. Sometimes this process is quite normal, at least if it's just a few leaves.
If the Dipladenia is too dark, it can react with loss of leaves
As an evergreen, the Dipladenia does not shed all of its leaves every fall, but old foliage still needs to be renewed from time to time. That's why some old leaves turn yellow and then fall off. As long as there aren't too many, you don't have to worry.
Why is my Dipladenia losing its leaves?
If your Dipladenia is shedding leaves at the wrong time, or too many at once, then it is important to investigate the cause. Is your Mandevilla, as the Dipladenia is also called, in the right place, i.e. bright and warm, or was it perhaps overwintered incorrectly? In winter, the Dipladenia needs temperatures of around 8 °C to 15 °C and a bright place.
Check your Mandevilla regularly for pests such as spider mites or lice. Because these can also lead to discoloration and the loss of the leaves. The same applies to diseases that can occur particularly in an environment that is too humid.
What should I do if my Dipladenia loses leaves?
The Mandevilla may also react to too much water or fertilizer with discolored leaves. If you don't quickly adapt the care to the needs of your Dipladenia, then it will lose its leaves. It is best to completely replace completely soaked soil, then water your Dipladenia only moderately and do without fertilizer for a few weeks. After that, fertilize about every 2 weeks, but not too liberally.
Reasons for discolored or falling leaves:
- the age of the leaves
- too much water or fertilizer
- too little light or heat
- an infestation of pests
- a plant disease
- wrong winter quarters
tips
Respond immediately as soon as your Dipladenia loses too many leaves at once, then you still have a good chance of saving your plant.