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.
Starting a Mandevilla Plant From Nodules on Roots
Certified GKH Gardening Expert
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