Importance. -- Branches beyond the mistletoe infection may be
stunted and even die. Trees usually are not killed. However, in heavy
infections on water oak, trees may decline and be killed. These "true"
mistletoes are used for Christmas greens.
the Causal Organism (figure 72). -- Leafy, evergreen perennial shoots
with dark green, leathery leaves occur in bunches on branches of oaks.
The plant is opposite-leaved and the stems are rounded and jointed.
The flowers are inconspicous. White to red berries are produced in the
the Injury. -- The most conspicuous sign of mistletoe infestation
is the presence of the parasite. The affected branch may be slightly
enlarged at the base of the mistletoe plant. Multiple mistletoe plants
in an oak crown may stress the tree
-- The seeds are sticky and are spread by birds and other animals. The
seeds lodge on young branches, germinate, grow into the young branch
and produce a mistletoe plant.
-- Control is normally not needed but mistletoe can be controlled by
removing it and cutting branches at least 1 foot below the point of