By Bill McNee, forest health specialist, Bill.McNee@wisconsin.gov, 920-360-0942 and Andrea Diss-Torrance, invasive forest insects program coordinator, Andrea.DissTorrance@wisconsin.gov, 608-264-9247
Hunters should avoid placing tree stands in or near ash trees, especially in the southern half of Wisconsin, the Mississippi River region and in Door County. Many ash trees in these areas are dead or dying from attack by emerald ash borer (EAB), becoming weaker and more likely to break even with little to no added weight. Continue reading “Dead and dying ash are hunting hazard”
Every wonder if you can successfully plant trees in the fall? Which species are suited to a fall planting and which aren’t? Check out this article from Iowa State University Extension and Outreach. Even though it originates from out of state, much of the information is applicable to the Midwest, including Wisconsin.
Wisconsin may be best known for our cheese, lakes and beer, but did you know that we are second in the country for number of Tree City USA communities?! Last year 195 Wisconsin communities achieved Tree City USA status, and those communities are home to nearly 60% of Wisconsinites. Wouldn’t it be something if we were number one in the country this year?! Well, here’s our chance – the application period for Arbor Day Foundation’s (ADF) recognition programs, including Tree City USA and Tree Campus USA, is now open! Continue reading “Arbor Day Foundation now accepting Tree City USA applications!”
By Dan Buckler, Urban Forestry Assessment Outreach Specialist, 608-445-4578
It wasn’t by chance that Norway maple made its way across the pond to our shores. It was, in fact, humble correspondence that invited it here. Continue reading “Norway maple: a boon and bane to Wisconsin communities”
Have you noticed a fast-growing vine with fragrant flowers on your trees and shrubs this summer? The plant began to flower a few weeks ago, drawing attention and concern from residents around the state.
Wild cucumber blooms in mid- to late summer with yellowish-white fragrant flowers. Credit: Susan Mahr.
Continue reading “Native vine thrives with wet Wisconsin summer”
By Linda Williams, forest health specialist, Woodruff, Linda.Williams@wisconsin.gov, 920-360-0665
Barklice tend to congregate in large groups on trees, which can lead some people to worry about tree health, but they are actually quite harmless.
Immature barklice congregated on bark. Striped abdomens are easy to see before the insects mature into adults and develop wings.
Continue reading “Barklice are nothing to worry about”
If we use the K.I.S.S. principle, then here is your formula: if your tree needs water, then water it. If your tree doesn’t need water, then don’t. Continue reading “Tree watering: a simple act, a science and an art, but bottom line – all trees need water (even in autumn)”
Todd Lanigan, forest health specialist, Eau Claire, Todd.Lanigan@wisconsin.gov, 715-839-1632
You may have noticed some of the elms and maples had a lot of brown in them at the end of May and early June. Some elms and maples produced a lot of seed this spring, which reduced the amount of energy available for producing leaves. With fewer leaves and more of the brown, papery seeds, the trees can take on a thin, brown appearance.
Heavy seed years can occur for many reasons. It happens naturally from time to time and it can also be stimulated by environmental stressors. A couple of examples of environmental stressors are: excessive moisture, winter injury and frost damage to roots.
The cause of this year’s heavy seed production is anyone’s guess. There does not appear to be a common pattern between the affected trees to indicate whether it was simply a normal heavy seed year or related to an environmental factor.
Bill McNee, forest health specialist, Oshkosh, Bill.McNee@wisconsin.gov or 920-360-0942
Adult deer tick. Credit: Scott Bauer, USDA Agricultural Research Service, bugwood.org.
So far this spring we are off to a busy tick season, with many reports and photos being sent in to DNR staff. Ticks can be found year-round in Wisconsin but are most active from May to September. Some species, including the deer tick responsible for Lyme disease, carry infectious diseases that elevate them from mere nuisance to serious health threat. Lyme disease is most often spread by very small, immature ticks known as “nymphs.” Adult deer ticks can also transmit Lyme disease, but because they are larger, they are more likely to be discovered and removed compared to the tiny nymphs which can be as small as a chia or sesame seed.
Continue reading “Protect yourself from ticks and tickborne illnesses”
May is National Asthma and Allergy Awareness Month. Did you know trees help prevent asthma and other respiratory diseases? Trees filter particles out of the air we breathe, which decreases our risk of respiratory illnesses, including asthma. One study found that in 2010, trees removed 17.4 million tons of air pollution across the US, which prevented 850 human deaths and 670,000 cases of acute respiratory symptoms. Continue reading “Trees clean the air and prevent respiratory illness”