Several minor, late season turf diseases have been reported found on lawns recently. Leaf spot and blight diseases such as Colletotrichum, Curvularia, Leptosphaerulina, and Ascochyta often develop as the result of long-term exposure to stress, like the end of summer that had variable periods of precipitation and high soil and air temperatures, such as the one we are currently…
Disease Details First described in the 1990s in the United Kingdom, boxwood blight, was not officially identified until 2002 in New Zealand. The fungus that causes this disease, was itself a newly identified species; named Cylindricladium pseduonaviculatum by finders in New Zealand while also being called C. buxicola when found in the UK. The two names…
During a visit to a greenhouse, dark angular leaf spots were observed on two coleus cultivars. Necrotic spotting was more pronounced on the lower foliage than the upper foliage. (The necrotic spots were confined between the secondary veins, which gave them a blocky appearance, but in the case of these Hosta, were confined between the…
