That's really too bad. Spruce spider mites cause needle discoloration and eventually kill needles, which can be mistaken for a needlecast disease (Photo 7). Why is My Evergreen Tree Turning Brown from the Bottom Up? There are all manner of reasons why a spruce tree's needles turn brown, from sawflies and budworms to fungi, viruses, mites and bad weather. Look for these symptoms to see how to save your declining tree. Thanks salicaceae! Black fruiting bodies are on the stems. 1) Water, Please. Like; Save; catherinet. In drought-like conditions, evergreens may have trouble getting enough water to all their needles. I think its called diplodia blight?? Infected needles may remain attached for several years. This distinction is important since not all insecticides will control mites. Colorado spruce, Norway spruce and white spruce including Black Hills. Black Hills Spruce and Norway spruce are largely resistant to this disease - though not immune. Where it occurs: rarely found in the state; Symptoms: First sign is yellow bands on the needles that turn purplish-brown and extend over the entire needle by fall. Primarily on Colorado spruce, & occasionally Black Hills spruce (P. glauca var. densata). From a distance, the tree looks healthy with vigorous growth. 2. Plus, you’re likely wondering if this means your pine or spruce is dying. I also love Austrian pines and had/have about 8 of them, but they are all dying. Wherever I drive anywhere around this area, they're all dying. 10 years ago. Host(s) Colorado spruce (P. pungens), Norway spruce (P. abies), black spruce (P. mariana), white spruce (P. glauca). As a result, bottom needles die to help hydrate the rest of the tree. Species affected: Black Hills spruce is the most susceptible. Photos 6-7. Spruce spider mites. Lawns, Landscaping and Outdoor Decor - Black Hills Spruces Keep Dying! Black Hills Spruce Trees Dying Blue Spruce Dying From Bottom On Up I have noticed a few things in general, however. - I'm getting frustrated because we had three black hills spruce trees planted in … In Photos 1 and 2, you can see a Colorado blue spruce from its east and west aspects in July 2009. Technically, mites are not insects, but are related to spiders. But upon closer inspection (Photo 3), there are sections of needlecast and branch death around the base of the tree that are beginning to become noticeable, hence the reason the photos were taken in 2009. Original Author.