For example, pine gall rust on Scotch pine will not only slow the growth of trees, it will kill branches and ultimately kill trees. Armillaria root rot is caused by a fungal pathogen that can infect all known conifers (and hardwood tree species) used in the Christmas tree industry.Click to see full answer. Similarly one may ask, will trimming a Christmas tree kill it?Cut Christmas trees are still alive when you buy them. Having their roots cut away when they are harvested will kill them, of course. But it’s our job to keep them on life support and in good shape for as long as possible. Life support means keeping water moving into the tree. what do they spray Christmas trees with? Most Christmas tree growers regularly spray Roundup and other herbicides to control noxious weeds and Lorsban—an organophospate insecticide that has been linked to nervous system damage, among other things—to kill aphids, which damage trees by yellowing foliage and stunting growth. Considering this, should you mist your Christmas tree? NEVER let the tree dry out while it is indoors – just check the water in the stand once or twice daily. Misting your Christmas tree can help to keep moisture in the needles and branches. If you are misting, keep it very light and try to do it frequently rather getting the tree dripping wet.How do you keep a Christmas tree alive outside?If you’re going to store the tree outside for a couple of days, put the end of its trunk in a bucket of water. But first … If the tree has been cut for more than 6-8 hours — and so has been out of water that long — make a new, straight cut at the bottom of the trunk. Use a saw to cut an inch or so off the end.

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