A pic would really help, but that’s been a difficult thing to do on this site lately.

Check the buds for bugs. Aphids love my Adenium flowers.

They’re going into dormancy (at least in the Northern Hemisphere). What are your growing conditions like?

My rose is inside, in a pot, it get lots of indirect sunlight. And I try to keep it away from he window so it doesnt get cold.

Indirect sunlight is slightly better than no sunlight, but just a little. Your plant, when in growth, needs full sun. Inside is not desirable either, but if that’s all you have, your other conditions can be adjusted for that.

I get same thing on my desert rose. I did not took a picture but when flower buds start forming and getting bigger, all of the sudden it start getting brown spot and eventually fall off. Maybe night temperature is getting cold? or watering during flower buds are forming?

my plant is grafted and grafted part is getting this. bottom side I have let branches grow and mother plant flower is fine........

Kawagoe, when you say “bottom side” are you referring to the rootstock below the graft? As in, you are allowing the mother plant (rootstock) to grow branches?

If so be careful as the rootstock can take over and become the more dominant plant causing the graft to not thrive.

At least that’s what I’ve observed on my other grafted plants (roses, fruit trees). As soon as I see shoots from the rootstock I rub them off so that all of the plant’s energy goes to the grafted on plant.

Maybe Adenium are different...?

SoCal Stewart,

Yes I understand that root stock graft plant, I do what you said. (lemon, orange and apple trees in my back yard). But I let this grow......and I like the roots stock flowers. My grafted flower is double petal white flower.