Rhozosphaera needle cast strikes in mid to late summer. I am having problems with my black hills spruce, the needles are dying. My internet is very slow and I don't know if the first one went thru. All Rights Reserved. Can you recommend anyone to spray them? This disease causes needles to turn purplish-brown and fall off, working from the inside of the tree out and from the … The summer before last my Black Hills Spruce had a needle cast disease and shed quite a few needles. Is this a fungus? Rhozosphaera needle cast strikes in mid to late summer. Black Hills Spruce Diseases Lirula Needle Blight. Rhizosphaera needle cast is a fungal disease of spruce trees that causes needles to turn brown and fall off. The needles turn brown and appear dead. People also chewed the resin to aid digestion. Spray the infected Black Hills spruce tree with a fungicide containing Chlorothalonil, according to package directions, in early spring when new needles are small. The Black Hills spruce (Picea glauca) is a variety of white spruce native to South Dakota. Information at these websites may help you diagnose the problem:https://www.extension.umn.edu/garden/yard-garden/trees-shrubs/spruce-tree-diseases/fungi-associated-...https://www.extension.umn.edu/garden/yard-garden/trees-shrubs/spruce-tree-diseases/rhizosphaera-need...http://files.dnr.state.mn.us/assistance/backyard/treecare/forest_health/whitesprucediagnosis.pdf, If you are still uncertain after reading the information at the websites, consider asking a forester or certified arborist to assess the tree's health onsite and recommend a course of action.This information may be useful if you decide to hire an arborist:How to hire a professional arborist to help care for your landscape treeshttp://www.extension.umn.edu/garden/yard-garden/trees-shrubs/how-to-hire-a-professional-arborist/. "Stigmina needle cast" We have long been familiar with Rhizosphaera needle cast, a very common fungal disease that affects primarily Colorado blue spruce, and occasionally Black Hills spruce. Based in the American Southwest, Bridget Kelly has been writing about gardening and real estate since 2005. The Black Hills spruce tree grows best in moist, loamy soil in full sun in its USDA hardiness zones (2 to 6). This disease first occurs in the tree’s second year, in late summer. It affected about two thirds of the trees and needles sluffed was from 5 percent to 33 percent with it not being very uniform. Apply a fungicide containing chlorothalonil when new needles are half the length of mature needles, and a second time, one month later, according to package directions. Her articles have appeared at Trulia.com, SFGate.com, GardenGuides.com, RE/MAX.com, MarketLeader.com, RealEstate.com, USAToday.com and in "Chicago Agent" magazine, to name a few. Please excuse if this is a duplicate email. Another fungal disease that is destructive to the Black Hills spruce. Tree Type Mature Size The Black Hills spruce grows to a height of 30–60' and a spread of 15–25' at maturity. Two possible new diseases of spruce have been seen in the Plant and Insect Diagnostic Clinic recently. Rhozosphaera needle cast strikes in mid to late summer. I estimate about 6 to 7 percent of the needles shed on all the trees. It is introduced into the tree through wounds, starts on the lower branches and spreads quickly to others. See pics. Spray the infected Black Hills spruce tree with a fungicide containing Chlorothalonil, according to package directions, in early spring when new needles are small. It can be identified by yellowing needles that burn brown in late winter. Needles turn brown and die and the tree secretes white or light blue resin from lesions on the bark, called cankers. A fungal disease, lirula needle blight overwinters on the tree’s needles and becomes progressively... Rhizosphaera Needle Cast. Bark color and texture Scaly bark, silvery-gray in color. Evergreen needles, green to blue green, brighter than those of the species. Ask an Expert is made up of groups and individual experts. The black hills spruce can be expected to grow in Hardiness Zones 2–6. Black Hills spruce (Picea glauca var. Rhozosphaera needle cast affects the needles on lower branches that are closer to the trunk, rather than those at the tips of the branches. Copyright Leaf Group Ltd. // Leaf Group Lifestyle. The latter has a darker foliage, which is found to be denser than the white spruce. Can you recommend anyone to spray them? Natives mixed the resin from the tree with oil and treated wounds, burns, rashes, scabs, sores, and other skin problems. Black Hills Spruce Problem. However, we can't determine which by viewing the photos. Globe Arborvitae (Thuja occidentalis ‘Woodwardii’): 6 feet tall by 8 feet wide, slow-to-medium growth rate, rounded form, full sun to part shade Disease, pests, and problems. The needles will fall off the tree one year after it is infected. densata): 40 feet tall by 35 feet wide, slow growth rate, pyramidal form, full sun to part sun. It is primarily spread by rain, insects and birds. Growth Rate This tree grows at a slow rate, with height increases of less than 12" per year. Trees can be protected from Rhizosphaera needle cast with properly timed fungicide applications. Leaf or needle arrangement, size, shape, and texture. Is this a fungus? Trees stressed from drought, poor planting practices or other factors are more likely to suffer from Rhizosphaera needle cast. Asked May 22, 2017, 12:38 PM EDT. 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. Generally grown as an ornamental tree, the Black Hills spruce also serves as a windbreak or privacy screen in some residential landscapes. She holds a Bachelor of Arts in English with a concentration in creative writing. Found in the Black Hills area of South Dakota. A fungal disease, lirula needle blight overwinters on the tree’s needles and becomes progressively worse over the course of three years. Plan the perfect garden with our interactive tool →, North Dakota State University: Black Hills Spruce, University of Minnesota Extension: Diseases of Spruce Trees in Minnesota, University of Nebraska-Lincoln: Cytospora Canker of Spruce. Another fungal disease that is destructive to the Black Hills spruce. The needle loss probably has been caused by a fungal disease. To avoid this disease water the tree during periods of drought, mulch around the base and avoid getting water on the needles. After pruning, apply a fungicide to the wounds. 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. I live in Cologne, MN. Learn which plants thrive in your Hardiness Zone with our new interactive map! I did not see any black spots but cannot be sure. This procedure will need to be repeated for every spring for three years to be effective, according to the University of Minnesota Extension Service. I am having problems with my black hills spruce, the needles are dying. It is, therefore, advised that you keep the tree healthy with proper watering and other maintenance procedures. I live in Cologne, MN. Native geographic location and habitat. The inner bark of the black spruce was a poultice to reduce inflammation, as well as a tea to help with kidney stones, rheumatism, and digestive issues. See pics. As compared to the original species, i.e., white spruce (Picea glauca), the Black Hills spruce is slow-growing and smaller. https://www.extension.umn.edu/garden/yard-garden/trees-shrubs/spruce-tree-diseases/fungi-associated-... https://www.extension.umn.edu/garden/yard-garden/trees-shrubs/spruce-tree-diseases/rhizosphaera-need... http://files.dnr.state.mn.us/assistance/backyard/treecare/forest_health/whitesprucediagnosis.pdf, http://www.extension.umn.edu/garden/yard-garden/trees-shrubs/how-to-hire-a-professional-arborist/. I did not see any black spots but cannot be sure. Please excuse if this is a duplicate email. It is, therefore, advised that you keep the tree healthy with proper watering and other maintenance procedures. Mites, bagworms and sawfly are potential pests. Apply again three weeks later, according to package directions. Early management includes pruning off and destroying diseased branches. The Black Hills spruce (Picea glauca) is a variety of white spruce native to South Dakota. These trees are native to the Black hills of South Dakota, where they are found abundantly, that too at elevations of more than 6000 feet.