Excessive rains have led to widespread occurrence of fungal anthracnose and bacterial leaf scorch in trees, as well as other tree diseases, and resulted in lots of mushrooms and bracket fungi. We are noticing many leaves falling early from trees such as silver maple
and sycamore. In disease affected trees, defoliation may be noticeable especially in low lying areas without good air circulation. At this point in the season, leaf spot and drop will have no long term effect on the health of the trees.
NFG 10/5/2018
Tag: leaf spot
Leaf Spot Diseases in Garden Tomatoes
Fact sheet, February 2017 on leaf spot diseases of garden tomatoes. Fungal leaf diseases such as Septoria can cause loss of leaves. 
Some leaf diseases such as anthracnose can lead to problems on ripening fruit. Click link below for fact sheet:
Tomato-Leaf-Spots-Fact-Sheet-Feb2017. 
Boxwood Blight Confirmed in Delaware
Boxwood blight caused by the fungus Cylindrocladium pseudonaviculatum was confirmed in a retail nursery in Delaware on June 19, 2013.
Boxwood blight was first identified in the U.K. in 1994 and then in the U.S. in October of 2011. The disease has been identified in nurseries and landscapes on boxwood and pachysandra. It has been confirmed in NC, CT, VA, RI, MD, MA, OR, NY, PA, OH, and Delaware. It was identified in the UD Plant Diagnostic Clinic in 2012, but came from plants in Maryland. In June of 2013, boxwood blight was identified in a retail nursery in Delaware.
See the new fact sheet from University of Delaware Cooperative Extension at: http://extension.udel.edu/factsheet/boxwood-blight-caused-by-the-fungus-cylindrocladium-pseudonaviculatum/
See the links below from American Nursery and Landscape Association and Connecticut Agricultural Expt Station:
http://www.ct.gov/caes/cwp/view.asp?a=3756&q=500388