Mandevilla flowers

Question

I bought a beautiful Mandevilla plant about one month ago. It’s in a large pot and was doing beautiful, but now it’s starting to turn yellow. I might have over watered it. I live in Phoenix, so it’s getting hot. Does that have something to do with it?

Answer 1

The heat and sunlight could definitely be affecting it, but typically yellowing leaves does mean the plant got too much water. Mandevillas need sandy, well-draining soil, support and some shade. Cut back on the water, cut off any dead leaves and double-check your sunlight situation.

This article may help you:

https://www.gardeningknowhow.com/ornamental/vines/mandevilla/mandevilla-plant.htm