Planting Mandevilla Plant

Question

I have several small 6” mandevilla plants that I started from cuttings last fall. I am now thinking of transplanting them to a 12” pot in preparation to placing them outside in about a month. My question. How many of the plants would I put in the 12” pot. I.E. 1 or 2 or more plants per pot.

Answer 1

One. They will compete for space and nutrients with any more than one.

I would go up to an 8 inch, then 10, finally 12 as needed. You will likely run into problems with root rot going sizing up that large that fast.

Here are some articles that will help:

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

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

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