First Report of Crown and Root Rot on Eastern Redbud () Caused by in Tennessee.

Eastern redbuds () are the important trees in Tennessee nurseries, known for their vibrant spring blooms, and heart-shaped foliage (Kidwell-Slak and Pooler 2018). In May 2023, container-grown eastern redbuds exhibited crown and root rot symptoms. Disease incidence was 50% of 100 plants and severity was 40% for the affected root area.

First Report of Causing Root Rot on in Tennessee and the United States.

Swamp white oak () is a North American species of medium-sized trees in the beech family. One-year-old swamp white oak seedlings grown in field conditions in a commercial nursery in Warren County, Tennessee exhibited severe root rot in July 2024. Dark brown lesions were observed in the affected roots (Fig.

Vascular streak dieback: A novel threat to redbud and other woody ornamental production in the United States.

Eastern redbud ( L.) is a popular and high-value woody ornamental plant native to the eastern and south-central United States of America (U.S.

First Report of Causing Root Rot on Kousa Dogwood in Tennessee and the United States.

Kousa dogwood () is an economically important woody ornamental crop that exhibits creamy, white, pointed bracts in late spring, and reddish to pink drupe fruits in late summer and fall. It bears shiny dark green leaves that become reddish-purple to scarlet in the fall. In August of 2023, 3-year-old container grown var.

Goldenseal ( L.) Extracts Inhibit the Growth of Fungal Isolates Associated with American Ginseng ( L.).

American ginseng, a highly valuable crop in North America, is susceptible to various diseases caused by fungal pathogens, including spp., spp., and spp.

First Report of Leaf Blight of Caused by in Tennessee and the United States.

Japanese camellia (), is an important ornamental species that has an increasing economic value in China, Japan, Australia and the USA (Vela et al. 2013). Leaf blight symptoms were observed on 20-year-old 'April Tryst' leaves collected from a research plot in McMinnville, TN in March 2022.

First Report of Root Rot of Redbud Caused by in Tennessee and the United States.

The eastern redbud ( L.) is an esthetically and economically important landscape tree with vibrant blossoms and attractive heart-shaped leaves. One-year-old eastern redbud seedlings grown in field condition in two commercial nurseries in Warren Co.

First Report of Leaf Spot of Caused by in Tennessee and the United States.

American ginseng ( L.) is an herbaceous perennial understory plant. It was listed as endangered species by the Convention on International Trade in Endangered Species of Wild Fauna and Flora (McGraw et al.

First Report of Bacterial Leaf Spot of Red Maple Caused by pv. in Tennessee.

Red maple ( L.) is an economically important ornamental nursery plant grown for its aesthetic value. In May 2022, field and container-grown red maple 'October Glory' plants exhibited severe leaf spots in a commercial nursery in Warren Co.

First Report of Rusty Root of Caused by in Tennessee and the United States.

American ginseng ( L.) is one of the most valuable medicinal plants that is native to the U.S.

First Report of Powdery Mildew of American Ginseng Caused by in Tennessee and the United States.

American ginseng ( L.), native to the forested regions of northeast U.S is a perennial herb valued as traditional Chinese medicine.

Occurrence of Volutella Blight Caused by on Boxwood in Tennessee.

Boxwood ( sp. L.) is a very popular evergreen shrub in the United States which is widely used as landscape plant and fresh greenery.

First Report of Powdery Mildew on Caused by in Tennessee.

Eastern ninebark ( (L.) Maxim.) is a popular native perennial plant used in landscapes because of its colorful foliage and spring flower display.

First Report of Causing Root and Crown Rot on Flowering Cherry in Tennessee.

Flowering cherry ( Lindl. 'Kwanzan') rooted cuttings grown in propagation beds containing 40% coarse sand and 60% ground pine bark in a commercial propagation nursery in Warren County, Tennessee were exhibiting root and crown rot in December 2016. Dark brown to black soft lesions were observed in the roots as well as the crown region of flowering cherry rooted cuttings and those rooted cuttings were non-marketable due to lesions.

Diversity and Mefenoxam Sensitivity of Phytophthora spp. Associated with the Ornamental Horticulture Industry in the Southeastern United States.

Phytophthora isolates associated with ornamental plants or recovered from irrigation water in six states in the southeastern United States (Georgia, North Carolina, South Carolina, Tennessee, Texas, and Virginia) were identified and screened for sensitivity to mefenoxam. Isolates from forest and suburban streams in Georgia and Virginia were included for comparison. A new in vitro assay, utilizing 48-well tissue culture plates, was used to screen for mefenoxam sensitivity; this assay allowed high throughput of isolates and used less material than the traditional petri plate assay.