Black knot fungus

Asked February 19, 2017, 2:07 PM EST

I have a chokecherry that is infected with black knot and I am in the process of pruning galls/infected branches. My question is: do I need to be concerned about a Linden that is in close proximity to this tree? Thank you

Wabasha County Minnesota linden tree black knot

1 Response

Black knot is a disease of Prunus spp. (plums and cherries). Linden is Tilia americana, a different genus. They are even different families: Prunus is in rosaceae and Tilia in malvaceae. You have no worries. Read here about black knot:
http://www.extension.umn.edu/garden/yard-garden/trees-shrubs/black-knot/

And here about linden:
http://www.extension.umn.edu/garden/yard-garden/trees-shrubs/native-trees-for-landscape-use/