The elm zigzag sawfly (EZS), Aproceros leucopoda, is a non-native insect recently detected in several midwestern states. Originally from eastern Asia, this insect is rarely considered a problem in its native range, having several natural enemies and environmental factors able to keep it in check. However, when in new landscapes, aspects of this insect’s life…Read more about A New Threat to Elms in North America[Read More]
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Landscape Report
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As September begins, we officially welcome meteorological fall. While the autumnal equinox isn’t until September 22, the past few mornings have already brought a crisp, fall-like feel to the air. Around town, fall decorations are starting to appear, and a few maple trees are showing early hints of color. My wife, however, is eagerly waiting…Read more about Welcome Meteorological Fall, Drought Concern Grows[Read More]
Summer 2024 was a stressful season for lawns in Indiana and throughout the region. Temperatures often spiked to uncomfortable levels, particularly towards the end of August, and were accompanied by either sweltering humidity or an abrupt halt to rainfall. Diseases such as brown patch on tall fescue were prevalent and leaf spot/melting out diseases on…Read more about Disease Worries on Lawn Seed and Seedlings?[Read More]
August was National Check Your Tree Month, but this is something that every tree owner/manager should be doing year-round. As the last hot days of summer are finishing up and we look forward to cooler fall days, we can look to our trees for different signs of trouble. Most people tend to look up at…Read more about Enjoy Your Trees While Checking Them[Read More]
Pattern changes, like the one we’ve experienced in the middle of the month, are quite typical for August. The humidity decreases a bit, the soils dry out, and sometimes, like we’ve recently experienced, the temperatures drop quite dramatically. It can be refreshing and exciting for Fall lovers to experience some crisp, cool air in mid-August….Read more about Hot for August’s End, Little Rain in Sight[Read More]
As summer comes to a close, plants are rapidly releasing seeds and the most noticeable are the flying fluffy type. Thistles, asters, and milkweed are just a few of the summer-flowering plants that depend on the wind to disperse their seeds, sometimes carrying them miles away to potentially suitable locations, though seeds typically land with…Read more about What the Fluff?![Read More]
In the last newsletter, an article on triclopyr (www.purduelandscapereport.org/article/the-summer-of-triclopyr-mounting-evidence-for-off-target-damage/) brought up much discussion on the Roundup brands now containing multiple active ingredients other than glyphosate. Professionals in the industry may encounter a client with herbicide damage symptoms that mimic growth-regulator injury instead of typical glyphosate damage symptoms. While the client may have used Roundup, they…Read more about When Roundup Isn’t Roundup: Clearing up the confusion between products[Read More]
After a period of hot and humid weather where heat indices reached triple digits in some locations, we welcome cooler than normal temperatures for the next several days. It is still summer, though, so sweaters, mittens, and scarves will not be necessary! There were a few temperature records broken over the August 5-6, 2024, period,…Read more about Cooler Temperatures Should Settle in for a While[Read More]
Milkweed is a popular choice in urban landscapes as more citizens engage with monarch conservation efforts and strive to maintain pollinator-friendly landscapes. This past month I have seen numerous images of aphids found on milkweed plants from all over the state. Homeowners are concerned that the infestation will negatively affect the monarch butterflies that rely…Read more about What are these small yellow bugs on my milkweed?[Read More]
On Tuesday, July 16, 2024 the Purdue Turf Program, the Purdue Green Industry Working Group and the Midwest Regional Turf Foundation successfully hosted the Purdue Turf and Landscape Field Day. The day didn’t start off as we had planned as our tent, capable of seating 500 people, was destroyed overnight in a severe storm. However,…Read more about Purdue Turf and Landscape Field Day – After the Storm[Read More]
Early June, we received a white pine sample at the Purdue University Plant and Pest Diagnostic Lab that showed early season needle loss lower in the tree canopy (Figure 1, 2). The majority of conifers hold onto their needles for multiple years, so loss of needles, even in the fall, can come as a shock…Read more about Septorioides Needle Blight of Pine[Read More]
Several weeks ago, Indiana received enough rain to eliminate drought across the state, leaving behind just a few counties in Abnormally Dry (D0) status. Fortunately, this week has been relatively quiet, allowing many areas to alleviate flooding issues. The U.S. Drought Monitor kept those Abnormally Dry areas nearly the same this week (Figure 1), so…Read more about A break before more rain[Read More]
Bill Walton, the legendary basketball player, sports announcer and perhaps the most outspoken and famous Grateful Dead fan, passed away in May leaving behind enough quirky quotes and euphemisms to make Yogi Berra proud. In a now viral clip since his passing, Mr. Walton reflects on teachings from his legendary coach and former Purdue basketball…Read more about Don’t Mistake Activity for Achievement[Read More]
The remnants of Hurricane Beryl brought much-needed rain to the state, although some areas experienced excessive totals. In addition, sporadic power outages were reported as a result of wind gusts exceeding 30 mph. The Community Collaborative Rain, Hail, and Snow (CoCoRaHS) volunteer network once again proved essential, with observations ranging from just under 0.4 inches…Read more about Remnants of Hurricane Beryl Bring Relief and Challenges to Indiana[Read More]
With recent rain storms across the state, watering may not be at the forefront of everyone’s minds. But as we head deeper into summer it is food to remember most of Indiana is in a state of abnormal dryness to moderate drought, continuing similar conditions from previous years. With that in mind, we should be…Read more about Summer Tree Care: Watering Your Trees[Read More]
Join the Turf Specialists for Lawn Care Diagnostic Training on August 1, 2024. Click here to register “The Purdue Turfgrass Program created Diagnostic Training Events in 2011 to provide turf industry professionals the opportunity to learn in a hands-on, demonstration fashion. Participants will learn concepts through presentations in the classroom and in the field during…Read more about Registration Open for Diagnostic Lawn Training: August 1st, 2024[Read More]
Recently a homeowner in Hamilton County posted on the Indiana Native Plant Society Facebook page with concerns about aphids, mites, and apple scab in her maple and oak trees. She asked for a second opinion and treatment options for these pests. I reached out to the homeowner and requested permission to collect samples from the…Read more about Case Study: Maple tree pests in the landscape[Read More]
As I write this article, in a cool, air-conditioned office, I hear others talking about how hot it is outside. I see weather app icons showing bold suns that stress how sunny and hot conditions are and will continue to be. I read Special Weather Statements, issued by the National Weather Service, about an extended…Read more about Hot and Dry Conditions Ahead[Read More]
The past two months have been relatively wet and cool to warm. This prolonged period of overcast conditions, high humidity, and light to moderate rainfall is perfect for some of our foliar disease issues. “April flowers bring May Leaf spots” doesn’t have the right ring to it, but we are seeing quite a bit of…Read more about Leaf Curl and Leaf Blister Brought By Wet Weather[Read More]
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