What is the relationship with mistletoe and spruce?

Mistletoe is a hemiparasitic plant that often grows on various tree species, including spruce. While mistletoe derives some of its nutrients and water from the spruce, it can also harm the host tree by drawing resources from it. The relationship is generally one of parasitism, where mistletoe benefits at the expense of the spruce. However, mistletoe can also provide ecological benefits, such as serving as food for certain birds.