Contact Sandesh Dangi (sandesh.dangi@ndsu.edu) and Sara May (srm183@psu.edu) for suggestions to include.

Notable First Reports
Herbaceous ornamentals and turfgrass:
First report of Pyricularia oryzae causing gray leaf spot of perennial ryegrass (Lolium perenne) in Oregon https://doi.org/10.1094/PHP-11-22-0119-BR
 
First report of bacterial leaf spot caused by Pseudomonas cichorii on Monstera adansonii in Hawaii, USA https://doi.org/10.1094/PDIS-06-23-1224-PDN [Read More]

""First report of Xanthomonas campestris causing leaf blight on buttercup (Ranunculus asiaticus) in South Carolina, USA https://doi.org/10.1094/PDIS-06-23-1147-PDN

""First report of Herbaspirillum sp. causing leaf spots on Boston fern (Nephrolepis exaltata) in Florida https://doi.org/10.1094/PDIS-06-23-1115-PDN

""First report of anthracnose caused by Colletotrichum theobromicola on Cyclamen persicum in South Carolina, U.S.A. https://doi.org/10.1094/PDIS-03-23-0482-PDN

""First report of nerine yellow stripe virus infecting crinum lily (Crinum sp.) in Texas https://doi.org/10.1094/PDIS-06-23-1149-PDN

""Phylogeographic and phylogenomic structure of the quarantine plant pathogen Colletotrichum liriopes, including new reports in the United States https://doi.org/10.1094/PDIS-10-22-2324-RE

""First report of Pseudocerradoa paullula causing aroid leaf rust on Swiss cheese plant (Monstera deliciosa) in South Carolina, U.S.A. https://doi.org/10.1094/PDIS-04-23-0701-PDN

First report of tobacco rattle virus infecting Weigela florida in the United States https://doi.org/10.1094/PDIS-02-23-0351-PDN
 
Woody ornamentals and forests:
First report of Phytophthora citrophthora causing leaf necrosis and terminal shoot dieback on Asimina triloba (pawpaw) in a Virginia floodplain forest https://doi.org/10.1094/PHP-05-23-0047-BR
 
Rust disease caused by Uredinopsis osmundae on balsam fir, Canaan fir, white fir, and sensitive fern reported from Pennsylvania, United States https://doi.org/10.1094/PHP-11-22-0115-BR
 
First report of Phytophthora ramorum on Cotoneaster sp. in the USA https://doi.org/10.1094/PDIS-07-23-1330-PDN
 
First report of root rot of redbud caused by Phytopythium vexans in Tennessee and the United States https://doi.org/10.1094/PDIS-07-23-1276-PDN
 
First report of Bot canker (Diplodia corticola) in pin oak (Quercus palustris) in Tennessee https://doi.org/10.1094/PDIS-02-23-0308-PDN
 
Vegetables, herbs, hops and table beet:
First report of Alfalfa mosaic virus on cowpea in the United States https://doi.org/10.1094/PHP-03-23-0021-BR
 
First report of Cucurbit chlorotic yellows virus affecting squash and pumpkin in Florida https://doi.org/10.1094/PHP-01-23-0006-BR
 
First report of Globisporangium uncinulatum (syn. Pythium uncinulatum) causing Pythium wilt of lettuce in Arizona https://doi.org/10.1094/PDIS-03-23-0472-PDN
 
First report of leaf blight caused by Curvularia aeria and C. senegalensis on tomato (Solanum lycopersicum L.) in Florida, USA https://doi.org/10.1094/PDIS-06-23-1209-PDN
 
First report of tomato spotted wilt virus infecting lettuce in Yuma, Arizona https://doi.org/10.1094/PDIS-04-23-0629-PDN
 
First report of Diaporthe fruit rot and stem canker of hydroponic cucumber caused by Diaporthe sp. in the United States https://doi.org/10.1094/PDIS-06-23-1214-PDN
 
First report of cucurbit yellow vine disease caused by Serratia marcescens on cucurbits in New York https://doi.org/10.1094/PDIS-06-23-1051-PDN
 
First identification of Xanthomonas nasturtii as the cause of black rot of watercress in Hawaii https://doi.org/10.1094/PDIS-05-22-1043-PDN
 
First report of Pseudomonas viridiflava causing bacterial leaf spot on parsley (Petroselinum crispum) in New Jersey, U.S.A. https://doi.org/10.1094/PDIS-11-22-2541-PDN
 
Tree fruit and small fruit: berries, nuts, stone, and pome fruit
First report of Lasiodiplodia pseudotheobromae causing postharvest decay of strawberries in Florida https://doi.org/10.1094/PDIS-07-23-1376-PDN
 
First report of Diplodia bulgarica causing black canker on apple in California https://doi.org/10.1094/PDIS-10-23-2031-PDN
 
The first USA continental record of coffee leaf rust (Hemileia vastatrix) on coffee (Coffea arabica) in southwest Florida, USA https://doi.org/10.1094/PDIS-09-23-1869-PDN
 
First report of Phyllactinia chubutiana causing powdery mildew on Goji berry plants (Lycium barbarum and L. chinense) in the United States  https://doi.org/10.1094/PDIS-10-22-2432-PDN
 
First report of Cladosporium ramotenellum causing sooty spot on postharvest clementines in the United States https://doi.org/10.1094/PDIS-02-23-0210-PDN
 
First report of Berkeleyomyces basicola causing black shoot rot of raspberry in nursery production in the United States and worldwide https://doi.org/10.1094/PDIS-04-23-0799-PDN
 
First report of Cytospora azerbaijanica causing Cytospora Canker and shoot dieback on peach (Prunus persica) in California, U.S.A. https://doi.org/10.1094/PDIS-03-23-0447-PDN
 
Field crops, cannabis, sugar beet, potato, sunflower
First report of red crown rot, caused by Calonectria ilicicola, and its effect on soybean in Kentucky https://doi.org/10.1094/PHP-01-23-0001-SC
 
First report of the root lesion nematode Pratylenchus penetrans parasitizing hemp (Cannabis sativa) in the United States https://doi.org/10.1094/PHP-12-22-0122-BR
 
Emerging Fusarium spp. causing head blight on hemp in Kentucky https://doi.org/10.1094/PHP-09-22-0089-SC

""Late-season decline: A new bacterial disease of corn identified in the Texas panhandle https://doi.org/10.1094/PHP-10-22-0106-RS

First report of Spiroplasma citri associated with disease symptoms in field-grown hemp (Cannabis sativa L.) in the Pacific Northwest https://doi.org/10.1094/PDIS-07-23-1419-PDN
 
First report of Verticillium stripe of canola caused by Verticillium longisporum in North Dakota https://doi.org/10.1094/PDIS-06-23-1089-PDN
 
First report of areolate mildew of cotton caused by Ramulariopsis pseudoglycines in Mississippi https://doi.org/10.1094/PDIS-03-23-0566-PDN