July 16, 2019
Spring often gets all the attention when it comes to flowers, especially flowering trees. Yet, there are several tree species that bloom in early to late summer. In addition to their late bloom, these trees en have other ornamental features that make them deserving of a spot in your landscape.
Phyllosticta needle blight, caused by the pathogen Phyllosticta thujae, is one of the few foliar diseases we see on arborvitae in the clinic. Pathogens of the genus Phyllosticta can also infect fir trees, junipers, and spruce.
The following are highlights and updates about sample submissions for our different services (identification or Plant problem diagnosis from fruit, vegetables, and ornamentals), and questions recently received in the Plant and Insect Diagnostic Clinic. Visit the PIDC's Facebook page for updates and more pictures. For more information on a particular disease or insect problem listed, follow the article cited.
The fruit and vegetable research taking place at Iowa State University’s Horticulture Research Station will be on full display for the Fruit and Vegetable Field Day Aug. 5.
The same two questions have been common this past week:
Bell peppers are the large, blocky, thick, sweet peppers belonging to the species Capsicum annuum. The three- to four-lobed fruit taper slightly at the bottom and depending on the cultivar are red, yellow, orange or other colors at maturity. They are a great source of vitamin C.