Is comfrey invasive?

Asked May 16, 2014, 9:08 PM EDT

Is comfrey invasive? It's good in shade and deer-resistant so it might be good for my wooded area, but worried it might take over!

Ingham County Michigan

3 Responses

Comfrey is a great garden plant, but it can take over. I found eight cultivars in one of my books and three of them said they were the non-invasive type, so that leads me to believe five of the eight are invasive. I also read that most cultivars prefer full sun, but some types accept partial shade.
Common comfrey (Symphytum officinale) is said to be the most invasive variety. Russian comfrey (Symphytum.x uplandicum) claims to be the least invasive.
If you do decide to plant them, it is important to not let them go to seed to keep them from spreading. Also, the roots go very deep and new plants can immerge from pieces of root.
I found these articles very informative: http://www.getinthegarden.com/2010/05/how-to-grow-comfrey/ http://www.ghorganics.com/page34.html
I hope this was helpful. Feel free to contact us again if you have further questions.

Thank you, Ruth! It sounds too high-maintenance for me so I am very glad I asked.
Karen