| Is Japenese Knotweed Polygonum (Falopia) cuspidatum the same or different from variegated Fallopia? Knot weed Polygonum (Falopia) cuspidatum is invasive. Is Variegated Fallopia invasive in Pennsylvania? |
| They are related, yes. Although the variegated clones are apparently male, they are able to cross with wild growing females, thus creating a hybrid according to the following article in the American Journal of Botany. The authors suggest the variegated plants therefore also be considered invasive and removed from sale. http://www.amjbot.org/cgi/cont... You would need to contact your local County Extension or the Department of Natural Resources to verify their legal status with regard to being listed as invasive -- or potential for being listed -- in your state. I hope this helps you in your research. |
