Problem with Mandevilla :-( Please kindly help :-(

[LenkaF1980]

Hello to all Forum members,

I kindly ask for your help in diagnosing the problem with my Mandevilla Sundaville. In the summer it looked wonderful and dense - beautiful flowers, dense leaves, healthy shoots. I know that it is a plant that hates cold, so according to the recommendations on the label, I moved it indoors at the end of September to overwinter.

I stick to the recommendations not to expose it to the sun, I stopped fertilising and water occasionally and a little, just so that the soil is slightly moist. The temperature is 20 degrees in the room.

Ever since I started wintering it, and I know it needs to rest, some strange things have been happening. It begins to lose a lot of leaves on the upper part, then green shoots grow, which then wither. As if it was slowly dying, and then green, juicy shoots come out, which then wither. I will add that the lower part is quite healthy and it looks as if this problem does not affect it.

I don't know if this is normal and how I should deal with it. If this is normal, I will simply remove fallen leaves and cut back dried shoots. I've put so much care into it all summer (I bought it for the first time this season) so I don't want it to completely wither away and die.

Please advise if this is a completely normal state and how to deal with it so that in spring I can enjoy the thicket of leaves and flowers again.
I will add that I do not see symptoms of a fungus or parasite.

Thank you very much in advance for your help and warm greetings to everyone.

 

[cpp gardener]

It actually would prefer to get at least half a day of direct sun. We grow them in full sun even in the Summer and as long as they never get dry enough to wilt, they do fine.

 

[tyronee]

It sounds like you’re doing everything you can to care for your Mandevilla through the winter, and I completely get how frustrating it is when these flowers of summer start struggling. It might be reacting to the change in environment—20 degrees can be a bit warm for dormancy, and lower humidity indoors often causes leaf drop or withering new growth. You could try slightly cooler temps (around 10-15°C) and increase humidity with occasional misting or a water tray nearby. If you’re looking for more advice or even products to help, flying flowers is a great resource to check out—they often have helpful tools, tips, and even supplies for plant care.

 

[LenkaF1980]

Thank you so much everyone for your input, I greatly appreciate your help Fingers crossed for my miserable Mandevilla, hopefully it'll survive the resting time indoors