2 mandevilla in one pot. One is dying

Question

I have 2 plants in one pot. One of them is dying. I don’t see any bugs. The soil is moist but not wet. Thoughts?

Answer 1

it sounds like they are doing what they would in the wild- Competing for root space. The one that is stronger will usually take over if there is not quite enough space for both of them.

This article will offer information on their care in container: https://www.gardeningknowhow.com/ornamental/vines/mandevilla/mandevilla-plant.htm