Starting a mandevilla plant from nodules on roots

Question

I divided a couple of my mandevilla plants this spring successfully. However, there were a lot of nodules attached to the roots that I did not transplant with the divisions. I tried to start more plants from these by putting them in pots of potting soil. They have not been successful. Can this not be done? Thanks.

Answer 1

Mandevilla can be propagated by layering or dividing the root-ball; however, most new plants are produced from softwood cuttings taken in early spring. For more information on cuttings, check out these articles: https://www.gardeningknowhow.com/ornamental/trees/tgen/how-to-root-cuttings-from-various-shrubs-bushes-and-trees.htm
https://www.gardeningknowhow.com/special/children/mandevilla-propagation.htm