If you still have needle-casting problems even though you have been using chlorothalonil-based fungicides, we ask you to consider spraying for needle casting disease management again, one month after your first spray. It is critical to read and follow all directions for application and take all safety precautions. 0soyoung Imperial Masterpiece. Chose a product at a fair price with free shipping. Apply this at the rate indicated for each garden crop for the disease to be controlled, by mixing in one gallon of water to cover approximately 200 square feet (10 ft. x 20 ft.) of planted crop. Fung-onil Multi-purpose fungicide by Bonide is truly all purpose. How many ounces in the $25.95 size, and, what is the mixing rate (ounces per gal.)? It is important to know what you are treating. Well-timed sprays in the spring will normally suppress Rhizosphaera to non-detectable levels in the population of trees. Do not apply more than the specified amount of this product per 200 sq. Prevent irrigation from directly spraying on the foliage of the plant. Again, if you apply fungicides for needle cast disease, we ask you to make one of those applications one month after your first application. Symptoms usually begin on the inner and lowest portions of the tree and progress upward. This article was published by Michigan State University Extension. 113 Q&A. Fungicides should be available at local nurseries, garden supply stores, or feed stores. Jeffrey W. Dwyer, Director, MSU Extension, East Lansing, MI 48824. Check out the MSU Sports & Commercial Turf Management Certificate Program! $25.95 The label on my bottle has been destroyed by water. Readily mixes with water and best applied with a tank type sprayer. I have been treating my everegreen bushes that have been on the ground for a very long time and fungonil has always removed the brown spots quite effectively!! Severely infected trees may hold only the current year's needles; whereas, a healthy spruce will retain needles 5 to 7 years. It is dying up the middle. You will use 1.50-2.50 tsp per gallon of water depending on what you are treating for. Check the label of any pesticide referenced to ensure your use is included. The magnificent color of the silver-blue-green needles truly makes this evergreen an American favorite. + Free Shipping* For more information go to https://www.P65Warnings.ca.gov. The disease can also affect other conifers including black, Engelmann, Serbian, Sitka, and white (e.g., Black Hills) spruce; Austrian, mugo and eastern white pine; Douglas fir and western hemlock. 15 of 17 people found this review helpful. To determine if your trees warrant chemical management, look for signs of fungal fruiting bodies on the needles. The biggest problem we often get asked about is needle cast. Symptoms. Colorado Blue Spruce. In Stock. I had that on 62 Blue Spruce trees and followed the direction. Controls leaf spots, rust, blights, mildews, molds, and other listed plant diseases on roses, flowers, fruit and shade trees, shrubs, and vegetables. diseases of Colorado blue spruce. Do not apply closer to harvest than the indicated Preharvest Interval (PHI) for each type of crop. Repeat applications at intervals specified. Readily mixes with water and best applied with a tank type sprayer. 62 of 66 people found this answer helpful, 61 of 63 people found this answer helpful. I explained to the caller that any poison applied would only affect the bees on the tree at that moment, and that constant application would be required over a period of over 21 days to be the least bit effective, and that the poison itself could be harmful to her young boys. Chlorothalonil fungicides can help control the Rhizosphaera. It is imperative that you treat the entire tree next spring with the chlorothalonil fungicide just after bud break and before needles are half elongated. Has your spruce been diagnosed? A protective fungicide with the active ingredient chlorothalonil (sold as Multi- Purpose Fungicide, Daconil 2787, and others), Two-some, Spectro-90, or copper based fungicide can protect new growth and prevent new infections. It's a great product to use in alternate treatment with Cleary. The representative that I talked to at Do My Own was very knowledgeable and helpful. In other words, when the needles stay wet there is a greater chance of Stigmina infecting the needles. Colorado blue spruce is not native to Indiana (no spruce is! this product is awesome for those spruce tree with purple needles. | MSU is an affirmative-action, equal-opportunity employer, committed to achieving excellence through a diverse workforce and inclusive culture that encourages all people to reach their full potential. This product is what I need to help prevent fungus and blight on my winter gem box woods. Honeybees had discovered my caller's blue spruce pollen and was afraid of them for both her and her kids. Normally ships in 1 business day. For more information, visit https://extension.msu.edu. Have sprayed the tree once...it will need several years of treatment. Blue spruce is susceptible to a fungal needle cast disease called Rhizosphaera needle cast named after the fungus that causes it. The link above has some spruce diseases that chlorothalonil is used to treat. ft. of garden area per year for each crop type. Testimonials », How long does Fung-onil Multi Purpose Fungicide Concentrate before rain. Diagnostics . I have a coulpe Norway spruce and one Col. blue spruce that I need to treat soon and don’t want to mess them up. ... Chlorothalonil-based fungicides may discolor spruce needles. It is a great product!!! Blue Spruce prefer to be located in a well-drained soil in an area of full sun, meaning the plant should be receiving at least six hours of sunlight daily. Blue spruce tree infected with Rhizosphaera needle cast exhibiting defoliation and branch dieback ... 100 gal water) or fungicides containing chlorothalonil or thiophanate methyl. Examine the white rows of stomata on two-year-old needles and if half of the branches have dark fruiting bodies on more than 10 percent of the needles, consider treating the entire plantation.