When I looked at it, the needles appear to be dying from the trunk outward. Symptoms entail needle tips turning yellow. Generally grown as an ornamental tree, the Black Hills spruce also serves as a … Fruiting Structure. Is it possible they are getting too much water? The black hills spruce can be expected to grow in Hardiness Zones 2–6. The black spruce’s other names are the bog spruce, eastern spruce, swamp spruce or shortleaf black spruce. Ask an Expert is made up of groups and individual experts. The Black Hills spruce is a large tree, with one specimen in North Dakota that stands at a height of 95 feet with a 42 foot spread. If too much calcium in your water is a problem, you should fertilize with a fertilizer meant for acid loving plants. Our spruce is turning yellow and loosing needles on the lower branches. We occasionally receive spruce samples in the Plant Disease Clinic that show yellowing of the needles, sometimes only older needles and sometimes both older and younger needles. It is in full sun. By mid-summer, small orange or white growths project from the infected needles. The needles on the tree are a beautiful blue color. The yellow needles do have some brown spots on them. The Black Hills spruce (Picea glauca) is a variety of white spruce native to South Dakota. sporodochia. (800) 262-3804, Iowa State University | PoliciesState & National Extension Partners. By mid-September these needles turn brown and begin falling from the tree. Occurs in Colorado blue spruce and white spruce. It's about 6 feet tall. Such symptoms are rarely a result of infectious disease. Today however, I just noticed that the top leader is turning light green to brown. Unfortunately, there is little that can be done to alleviate problems from poor planting or a poor site. Some of the trees are starting to yellow at the top. Injuries to the trunk or roots can also cause these symptoms. Links to this article are strongly encouraged, and this article may be republished without further permission if published as written and if credit is given to the author, Horticulture and Home Pest News, and Iowa State University Extension and Outreach. This page has information at the top on how to combat them: https://extension.umn.edu/yard-and-garden-insects/scale-insects-minnesota-trees-and-shrubs. If you, too, see yellow, brown or bare spots on your spruce trees, they may have the same fungus affecting, Ron’s trees–Rhizosphaera needle cast. Of course, every spruce can stand up to a rough winter, but this tree can survive unusually hot summers far better than other varieties. Lirula needle blight causes the inner needles of spruce trees to turn yellow then gray. Discolored needles will fall off in September. If it is still wet. Problems with planting are also a common culprit. If it is dry, water. Other trees near by are also showing some sign of yellow. We planted 3-4footBlack Hills spruce trees last year and have been watering them using a small rose bud sprinkler head for 2-3 hours one time a week. These problems emphasize the importance of starting with an appropriate site for a tree, and planting the tree properly. We use cookies to give you the best possible experience on our website. Another common group of conifers are the spruces such as Colorado blue spruce and Black Hills spruce. by Christine Engelbrecht, Plant Pathology Like us at Plant and Insect Diagnostic Clinic, Like us at Department of Plant Pathology and Microbiology. Learn more about what this fungus looks like, what it can do and how to control it. While Black Hills spruce is said to be a variety of the white spruce, such classification is a much-debated topic, as some experts refuse to accept the same. As far as watering, I would suggest that you first dig down several inches to see what is going on with the roots.