English Ivy: A “Dirty Dozen” Plant – Lewis Ginter Botanical Garden
A “Dirty Dozen” Plant – Lewis Ginter Botanical Garden
English ivy’s most dangerous attribute is that it vines up and chokes trees. Not only does this prevent photosynthesis from happening by blocking foliage from sunlight, but it also damages tree bark by holding moisture against the trunk. Fungal rot ensues, leading to a slow and painful death for infested trees. Under the weight of the vines, they are also more vulnerable to fall over during extreme weather events. As if that isn’t enough, H. helix is a reservoir for bacterial leaf scorch (Xylella fastidiosa), a pathogen that usually afflicts maples, oaks and elms.