Monthly Tip

The dense mass of leafy balls high up in trees is broadleaf mistletoe. There are multiple species in California, both native and introduced. Mistletoe is a hemiparasite, meaning it can photosynthesize on its own, but draws nutrients and water from its host. Birds feast on the translucent white berries, spreading the sticky seeds to new locations. When a seed sprouts, it sends out a modified root that penetrates the tree’s bark. A healthy tree can support a moderate infestation, but if the infestation is heavy or if a tree is stressed by other factors such as disease or drought, it can kill the tree.