Resources for landscapes and gardens in the Midwest
Landscape Report
Found 458 Articles
Fungicides are important tools for managing ornamental plant diseases (Fig. 1). There are many different fungicides and numerous methods of classifying them. One way to classify fungicides is by their chemical structures or modes of action — the specific ways the fungicides kill a fungus. Fungicides that share a common mode of action belong to[Read More…]
This week’s forecast is indicating unseasonably cold temperatures for most of the state with lows in the lower 20’s. While the temperatures shouldn’t reach record setting status, it could cause some plant stress. Plants are most susceptible to cold injury going into dormancy and coming out of dormancy, with maximum cold hardiness during the winter. [Read More…]
When spring mulching occurs, most companies will apply a preemergence herbicide for extending weed control. It is well known that the combination of mulch and preemergence herbicides is a very effective method in controlling weeds (https://www.purduelandscapereport.org/article/cultural-plus-chemicala-good-weed-control-combo-in-landscape-beds/). When applying preemergence herbicides with mulch, which should be first for the most effective control? This common question is[Read More…]
We receive a large number of spruce samples each year at the PPDL, with the vast majority being from Colorado blue spruce with needlecast. Many others show lower needle yellowing, which could be associated with nutrient deficiency or root stress. Figure 1 and 2. However we are receiving an increasing number of Norway spruce[Read More…]
As bud break is currently occurring on early species in southern and central Indiana, remember to be on the lookout for callery pear (Pyrus calleryana) on properties that you manage for removal. Callery pear (multiple cultivars in the landscape from this species) has become a major invasive species of concern in wild and disturbed areas[Read More…]
Leaf blotch, also called red spot and measles, is a common disease of peony caused by the fungus Graphiopsis chlorocephala (=Cladosporium paenoiae). The disease has multiple names because there are multiple symptoms. Lesion on leaves and stems can vary from tiny red spots (“measles”) to larger brown or purple blotches (Figures 1, 2 and 3).[Read More…]
This past February was among the coldest and snowiest we had since 2014. Yet despite our discomfort, it won’t be an issue for most insect pests that attack landscape plants. Most species regularly survive winters that are far colder. Indeed, the snow cover probably protected many insects from freezing in this year’s winter weather. Insects[Read More…]
WEST LAFAYETTE, Ind. —The 2021 Indiana Green Expo (IGE) will offer professional turfgrass, landscape and nursery managers recorded and live sessions. Recorded classes will be available Monday (Jan. 18) through Feb. 4. Keynote addresses, a virtual trade show and networking sessions will air live Tuesday (Jan. 19) through Jan. 22, beginning at 10 a.m. (ET)[Read More…]
The Indiana Arborist Association will be hosting a virtual conference from Jan. 26-29, 2021, in lieu of its 73rd annual in-person meeting. The virtual event will offer a diverse group of speakers and topics in order to engage professionals, volunteers, managers and decision-makers alike. “As our organization gathers virtually together in 2021, we have the[Read More…]
Please join us for the 2021 Indiana Arborist Association Virtual Annual Conference While we can’t be together in person this year, we can continue to learn with each other and earn those continuing education units (CEU). Hear the most current research and information from internationally and nationally known experts about emerging trends and BMPs.[Read More…]
It’s that time of year that roadways and sidewalks begin to be treated with salt. To prevent accidents, both vehicular and slips, salt is an invaluable tool that keeps people safe. For all of the benefits for humans, plants aren’t as appreciative. We have two great resources available that explains salt damage in great detail[Read More…]
For many of us, pest management is never far from our mind. This may be because the pests we manage are always there, and even if we can’t see them, we know that they haven’t disappeared completely. For this reason, it is important to take a time-out and think about how to improve your management,[Read More…]
Please join us Wednesday (November 18th) 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: Janna Beckerman: How the IR4 Environmental Horticulture Program Works for the Green Industry Kyle Daniel: Navigating the[Read More…]
Tubakia leaf spot, caused by the fungus Tubakia, is the disease we find more commonly on oak than any other. Throughout the world, there are 11 species of Tubakia known to infect oak, with Tubakia dryina (previously known as Actinopelte dryina) being the most commonly encountered species in our landscapes. Apple, ash, black gum, chestnut,[Read More…]
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