When Mistletoe Attacks: Investigating a Forest Parasite

It’s that time of the year when a white-berried, leafy green plant hangs above doorways around the world and provokes lovers and serendipitous strangers to share a kiss.

There are more than 1,300 species of mistletoe, including the two varieties popularly hung as a lure to sweethearts. All species can grow as parasites on trees and shrubs, stealing their food and water.