I hear this complaint or issue more frequently, “what can I do about the neighbor’s tree?” or “my neighbor just butchered my tree!”. Often, we see issues with a neighboring tree that may threaten safety or appears to be an elevated risk. For example, from the view of your window you see your neighbor’s tree…Read more about The Tree Next Door[Read More]
Resources for landscapes and gardens in the Midwest
Landscape Report
Trees, Shrubs, Vines
After you have decided on the best species and cultivar (right plant, right place!) for a location, it’s time to inspect the plants from the nursery or garden center. What should you be looking for when inspecting trees prior to transplanting into the landscape? Here are a few: Look for structural defects (Fig. 1). Ensure…Read more about Selecting High Quality Plants[Read More]
Please join us Wednesday (September 16th) for our bi-weekly, live educational series. The event will take place at 12:00 pm (Eastern) on Zoom at https://purdue-edu.zoom.us/j/96190839031 or on Facebook Live at https://www.facebook.com/PurdueLandscapeReport/. The following speakers and topics will include: Costs of Applying Plant Growth Regulators (PGRs) for Shrub Maintenance-Ariana Torres Plant Selections You’ll Live to Regret-Tom Creswell Manganese Deficiency…Read more about Purdue Landscape Report: Virtual Live[Read More]
This spring the PPDL received several samples, calls and emails related to dying weeping cherry trees (Fig. 1, 2, 3). Reports of this phenomenon came from as far away as Missouri. Ornamental cherry trees (and related Prunus spp.) are susceptible to multiple problems, including southwest injury (Fig. 4) Botryosphaeria dieback/canker (Fig. 5), bacterial canker and…Read more about Weeping Cherry Problems 2020[Read More]
Homeowners can easily become injured – often fatally – while attempting to trim trees near overhead electrical wires. Though it is tempting to try to save money with this “do-it-yourself” approach, the potential for electrocution is not worth the risk. It is important to recognize when to call a professional arborist.
The Purdue Landscape Report Team will begin a new, free online series that will start tomorrow (July 22) and follow the day after the newsletter every two weeks at noon Eastern time zone. The topics and speakers will vary each session, so check out the newsletter every two weeks to find out what follows the…Read more about Purdue Landscape Report Team Begins New Virtual Series[Read More]
As so many gardeners are staying at home these days, we’ve had more opportunity to enjoy the spring display. And then, perhaps inevitably, “normal” spring frost and freeze visited – some plants are vulnerable to damage. The amount of damage will depend on how far along they are in their development. Home fruit-growers may have…Read more about Assessing Freeze Injury on Horticultural Plants[Read More]
Labor issues and timing of tree care activities have been and will continue to be impacted by federal and state rulings as a result of CoVid-19. As a result of social distancing and confusion surrounding “essential services”, many plant health care technicians and business operations have been suspended. As the season progresses, these labor suspensions…Read more about Managing Emerald Ash Borer During the Covid-19 Pandemic…[Read More]
That “chill-out” time for our landscape is nearing the end and it’s time to think about tree maintenance. An important maintenance task is supplemental fertilization during early spring weather, especially if there wasn’t any type of fall fertilization. Let’s take a look at how a tree uses and gains energy during the year to understand why and when trees need nutrition.
This Nootka falsecypress (Chamaecyparis nootkatensis) is showing severe dieback throughout much of the tree (fig. 1 and 2). The primary pathogen present is a fungus in the genus Diplodia. Small twigs are infected first, which eventually leads to dieback of larger branches (fig. 3). Note the spherical black spore bearing structures (pycnidia) at the base…Read more about Nootka falsecypress Dieback Problems[Read More]
The dead lower branches in these Austrian pines (Fig. 1) are due to Diplodia (= Sphaeropsis) tip blight. The causal fungus infects newly elongating shoots, in late spring, resulting in stunting and death of the new growth (Fig. 2). Black spore-bearing structures of the causal fungus are formed at the base of the stunted brown…Read more about Diplodia Tip Blight[Read More]
The 2019 season provided challenges that were unexpected to the Green Industry, which included an abundance of rainfall followed by drought-like conditions, new invasive pests, concerns about glyphosate use, and many others. The Purdue Landscape Report focuses on timely articles that help Green Industry professionals make decisions for their business and keep abreast of looming…Read more about A Look Back at a Challenging 2019 Season[Read More]
Deicing salts can save your neck this winter, but they can spell disaster for landscape plants. Whether the salt is sprayed on the plants from passing traffic near the road or is shoveled onto plants near the sidewalk, the salt can cause damage. Salts can adversely affect plants in several ways. Salts deposited on the…Read more about Deicing salts helpful for people but not landscape plants[Read More]
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