Have you ever touched a pine tree then picked something up – anything – and not be able to put it down? It is now semi-permanently glued to your hand from the sticky resin produced by the tree. If you manage to extricate the object from your hand, you will need industrial strength cleaner with…Read more about Help! My conifer is bleeding![Read More]
Resources for landscapes and gardens in the Midwest
Landscape Report
plant disease
Many of the leaf spot diseases we observe can cause premature leaf drop in affected plants, which can reduce plant vigor if the disease is severe enough and a large proportion of the canopy falls in one season. Elm trees are susceptible to a number of different anthracnose fungi, including Ophiognomonia intermedia, Gloeosporium betulae, Cryptocline…Read more about Cryptocline leaf spot (anthracnose) of Elm[Read More]
Purple coneflower, Echinacea purpurea, is an old native standby that can thrive even in some difficult landscapes. With beautiful purple flowers and the ability to reseed and fill an area, it has been used widely, especially in gardens comprised primarily of native plants; however, they are not without their problems. We sometimes see some fungal…Read more about When purple coneflowers are not purple: Aster Yellows and Eriophyid mites[Read More]
Plants that show little growth, are stunted, or are wilted and in active decline are all hallmarks of root stress. Some of the more prominent pathogens that cause root rot include Fusarium, Phytophthora, Pythium, and Rhizoctonia, but there is another fungus which can cause just as much damage in the right situation that does not…Read more about Cylindrocladium Root Rot[Read More]
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