CORVALLIS, Ore. – If mistletoe’s status as a nutrient-stealing freeloader has been cooling your holiday ardor, new research led by an Oregon State University scientist may help relight the fire. A survey of urban forests in seven western Oregon cities found no observable connection between mistletoe infestation and negative health outcomes for the trees it was parasitizing. So worry not: Your yuletide kissing tradition probably does not involve a tree killer. And as you’re setting concern aside, you might want to head outside. “This is the best time of year to look for mistletoe because there are no leaves on the trees,” said College of Forestry professor emeritus Dave Shaw, an OSU Extension Service forest health specialist. “Also, chances are it will be found in an oak tree – most other trees don’t get infested. So if you are looking for a kiss, keep an eye out for oaks.”