Disease Index

Landscape and Nursery IPM Reports:

Diseases and Nematodes for 2011-2020:

Anthracnose	19May24 [1] (on strawberry) 14May30 [2] 13May24 [3], 13May17 [4], 13May10 [5] 12May11 [6] [7](shade trees), 12Apr13 [8] [9]11Jun24 [10] (epimedium), 11May20 [11], 11Apr08 [12], 11Mar18 [13] (on dogwood)
Anthracnose, ash	19May17 [14] [15]
Anthracnose, spot (on dogwood)	20May08 [16] 12Mar09 [15]
Anthracnose, sycamore	20Jun26 [17], 20Jun19 [18], 20May08 [16] 16Jun03 [19] 15May29 [20] 13May17 [4]
Aster yellows	20Jul31 [21] 19Aug02 [22] 14Jul11 [23] [24]
Bacterial leaf scorch	20Jul31 [21] (oak) 19Aug16 [25] (oak) 17Aug04 [26]13Sep27 [24], 13Sep20 [27]
Bacterial wilt	18Jun29 [28] (cucurbits) [26]
Beech Leaf Disease	19Aug23 [29] 18Aug03 [30] [28]
Black knot (on Prunus)	17Jun02 [31], 17Mar17 [32] 12Mar09 11Mar18 [13]
Black spot on roses	20Apr24 [33] 19May24 [1] 11Oct07 [34]
Blight, arborvitae tip	12Jun01 [35]
Blight, boxwood	20Oct09 [36], 20Aug28 [37], 20Apr24 [33] 19Apr26 [38] (Risk Model), 19Mar29 [39] 18Oct19 [40], 18Oct12 [41], 18Aug24 [42]17Sep29 [43], 17Apr14 [44]16Sep02 [45] (Documentation for shipping to PA), 16Apr29 [46] 15Aug07 [47], 15Jul10 [48] 14Sep19 [49], 14Jun27 [50] 12Oct05 [51], 12Jul13 [52], 12Apr06 [53], 12Mar30 [54], 12Mar09 [15]
Blight, brown rot blossom (on Kwanzan cherries)	20May08 [16] 15Apr10 [55] 14May02 [56] [35]
Blight, clematis	20Jun19 [18] 12Jun01 [35]
Blight, Diplodia tip	16Jul22 [57] [35]
Blight, eastern filbert	19Aug09 [58], 19Apr05 [59] 18Apr13 [60] 17Jul28 [61]16Jul29 [62] 14May30 [2] 12Aug10 [63]
Blight, late	18Jun08 [64] [60]
Blight, lilac bacterial	20May01 [65] [64]
Blight, Miscanthus	17July07 [66]16Jul22 [57] 13Jul12 [67]
Blight, Pestalotiopsis tip	20Sep18 [68] [66]
Blight, Phoma (on vinca)	19Jun07 [69] [70]
Blight, southern	19Jul26 [71] 18Aug17 [70] (hosta) 17Jul14 [72]13Aug09 [73], 13Jul19 [74]
Blister, oakleaf	20May29 [75] 14May16 [76] 12May18 [77]
Berry rot, on Ilex verticillata	14Mar21 [78] [67]
Botryosphaeria	20Apr24 [33] (redbud)
Botrytis	20Jul24 [79] 18Jun29 [28] (lily) 17Jun02 14Apr25 [80] (peony)
Boxwood decline	17May19 [81] [80]
Brown patch in turf	20Jul17 [82] (and nitrogen), 20Jul02 [83] 19Jun07 [69] 18Sep14 [84], 18Jul13 [85], 18Jun08 [64]17Aug18 [86], 17Jul21 [87]15Sep25 [88] 14Jun20 [89] (and pink patch) 13Jul12 [67] 12Jun01 [35] 11Jun17 [9]
Brown rot (on cherry)	18May25 [90], 18May18 [91]13May17 [4], 13Apr19 [92] 11Apr01 [93]
Canker, brand (of rose)	12Apr13 [8]
Cankers	11Jun03 [94] (willow)
Cherry Shot hole Diseases	20Nov13 [95], 20May22 [96], 20Apr03 [97] 18Jul06 [98]16May13 [99], 16Apr01 [100]
Crown rot (liriope)	12Jun29 [101] [102]
Daylily leafstreak	13Jun14 [103] [104]
Disease resistant dogwood (powdery mildew and spot anthracnose)	14May02 [56] [105]
Dollar spot in turf	20Jul24 [79] 18Sep14 [84]17Jul14 [72]12Sep14 [105]
Downey mildew	13Jul26 [106] (initiative to collect disease samples) [107]
Downy mildew, basil	20Aug21 [108] 19Apr12 [109]11Jul01 [107]
Downy mildew, impatiens	19Jul12 [110] 17Sep29 [43], 17July07 [66]16Jul08 [111], 16Jun03 [19] 15Jun26 [112] 14Aug29 [113], 14Jun06 [114] 13Aug23 [115] 12Jul27 [116], 12Jun29 [101], 12Jun08 [117]
Downy mildew, Rudbeckia	20Jul02 [83] [110]
Dutch elm disease	15Jul10 [48] 12Aug24 [118]
Elsinoe	18May04 [119] (dogwood) [48]
Fairy rings in turf	16Jul08 [111] [105]13Oct04 [120] 12Sep14 [105]
Fire blight	20Apr17 [121] 19Aug23 [29], 19May10 [122] 18Jun08 [64], 18May18 [91], 18May04 [119]17Jun02 [31]15Apr10 [55] 14Jun06 [114] 13Jun21 [123], 13May24 [3], 13May17 [4], 13Apr12 [124] 12May18 [77], 12Apr13 [8] 11Sep23 [125], 11Jun17 [9], 11May27 [126], 11May13 [127], 11May06 [128], 11Apr22 [129]
Flyspeck and sooty blotch on apple	18Sep14 [84] 13Jul05 [130]
Fruit Trees	19Oct18 [131] 17May26 [132], 17Apr21 [133] (update), 17Mar31 [134], 17Mar24 [135] (control)
Fungus, Septobasium and scale insects	20Aug07 [136] [137]
Fungi	20Oct16 [138] [137]
Fungi, in mulch	15Sep04 [137] 14Jul03 [139] [51]
Fungus, artillery	18May18 [91] 17Sep15 [140] [137]
Fungus, blue velvet spread	20Sep25 [141] [91]
Fungus, carbon crust	20Jun12 [142] [91]
Fungus, mushrooms	12Oct05 [51] 11Sep30 [143]
Fungus, on oak (smooth patch, white patch, or bark patch)	20Aug14 [144] [51]
Fungus, puffball	20Oct02 [145] [144]
Fungus, stinkhorn	20Sep04 [146] 19Aug23 [29] 18Jun01 [147]16Jul01 [148] 15Oct16 [149] [51]
Fungus, white spindles (in turf after rain)	20Aug21 [108] [29]
Gall, cherries	17July07 [66] [148]
Gall, exobasidium	20Jun19 [18], 20May29 [75] 19May17 [14] 16May20 [150] [151]12May11 [6](azalea), [151]12May04 [7] [151](camellia) 13Jun07 [151] (camellia), 13May24 [3] (camellia) 11May27 [126]
Gall, maple eyespot	14May23 [152] [24]
Gall, Phomopsis fungus	15Apr10 [55] [152](forsythia)
Gunignardia aesculi leaf spot on horsechestnut	16Jun03 [19] 13Sep27 [24]
Hosta Virus X	11Jun24 [10]
Marssonina blotch on apples	19Aug23 [29] [10]
Peach leaf curl	19May03 [153]11May20 [11]
Leaf blotch	18Aug03 [30] (on horsechestnut) 17Aug11 [154] (on horsechestnut)
Leaf drop on landscape trees	17July07 [66]15Aug14 [155]
Leaf spot, cercospora	20Jul10 [156] (roses) 18May25 [90]13Aug30 [157] 11Sep16 [158](walnuts)
Leaf spot, on cherry	19Sep13 [159]18Jul06 [98]15Sep18 [160] 14Sep19 [49], 14Aug01 [161], 14Jul18 [162], 14Jul11 [23], 14Jun27 [50], 14Jun13 [163] 11Sep16 [158]
Leaf spot, on cherry laurel	19Apr26 [38] [98]
Leaf spot, clematis	18Jun29 [28] [160]
Leaf spot, (Entomosporium)	11May27 [126]
Leaf spot, gray	18Oct19 [40], 18Oct05 [164]
Leaf spot, on holly	19May03 [153] [40]
Leaf spot, Hydrangea	20May29 [75] 17Jun30 [165] [126]
Leaf spot, iris	12Apr13 [8]
Leaf spot, maple	17May26 [132] 16Jul22 [57] [8]
Leaf spot, persistent (Bermudagrass)	17Jun16 [166] [132]
Leaf spot, photinia	14Jun13 [163], 14May09 [167] 12Apr20 [168]
Leaf spot, Septoria	20Jul02 [83] (Rudbeckia) 15Jul02 [169] 11Jun24 [10]
Leaf spot, Tubakia	20Aug21 [108] 19Aug16 [25] [169]
Leaf spot, yucca	18Apr06 [170] [169]
Liriope problems	15Jun26 [112] 13Aug02 [171], 13May03 [172]
Marsonnia blotch	18Oct26 [173] [112]
Mushrooms Mushrooms, glowing	20Oct09 [36], 20Oct02 [145] (Jack O'Lantern), 20Sep04 [146] 14Jun13 [163] 13Jul12 [67]13Oct25 [174]
Needle cast disease	20Apr17 [121] (blue spruce) 19Aug09 [58] [163]
Nematodes, foliar	13Jul12 [67] (hosta) [67]
Pink patch disease	17Apr28 [175] [2]
Phyllosticta	14May30 [2] (witchhazel) 11May20 [11] (witchhazel)
Phytophthora	[176]13Jun28 [177] (on vinca and petunias) 12Jul06 [176] (vinca), 12Apr13 [8]
Popcorn disease on mulberry (fruit)	11Jun10 [178]
Powdery mildew	20Aug07 [136] (dogwood, apple), 20Jul31 [21] (phlox), 20Jul02 [83] (oak and London planetree), 20Jun12 [142] (crape myrtle), 20Jun05 [179], 20May22 [96], 20Apr24 [33] 19Aug02 [22], 19Jul12 [110] (crape myrtle and dogwood), 19May24 [1] (rose), 19May10 [122] (dogwood) 18Aug17 [70], 18Aug03 [30], 18Jul20 [180], 18Jun22 [181], 18Jun15 [182], 18Jun01 [147], 18Apr27 [183]17Jul28 [61], 17Jul21 [87], 17Jul14 [72], 17July07 [66], 17May19 [81], 17May05 [184] (bluegrass lawns), 17Apr14 [44]16Jul22 [57], 16Jul08 [111], 16Jun17 [185], 16Jun03 [19] (dogwood), 16May13 [99] 15Jul31 [186], 15Jun26 [112], 15May29 [20] 14Oct17 [187], 14Aug15 [188], 14May23 [152] 13Jun28 [177], 13Jun21 [123] 12Oct05 [51], 12Sep07 [189] (dogwood), 12Jul20 [190], 12Jun15 [191], 12May25 [192], 12May18 [193] (dogwood), 12May11 [6] (rose) 12May04 [7] (euonymus), 12Apr06 [53] (turf), 12Mar30 [194] 11May27 [126], 11May20 [195] (euonymus), 11Apr29 [196](euonymus)
Puffballs in turf	13Oct18 [197]
Pythium	11Jul22 [198] (turf)
Red thread in turf	20Oct23 [199], 20Jul10 [156], 20Apr10 [200] 19Jun28 [201], 19May17 [14], 19May10 [122] 18May18 [91]17Jun09 [202]16May13 [99] 15Jul24 [203], 15Jun05 [204] 14Jun13 [163] 13May24 [3]
Root decline in Zoysia	15Oct16 [149] [203]
Rose mosaic virus	20Apr24 [33] [149]
Rose rosette disease	18Nov02 [205], 18Jun29 [28], 18May04 [119] 17Jun16 [166]15Jun05 [204] 14Jun06 [114] 13Jul12 [67] 12Jun01 [35] 11Sep23 [125], 11Jul22 [198]
Rust	18Jun22 [181] (callery pear) 12Jun22 [206], 12Jun15 [191], 12Jun01 [207] (Amelanchier and ash) 11May06 [128] (on Jack-in-the-pulpit)
Rust, ash	13May31 [208]
Rust, cedar apple	18Jul06 [98]17Jun02 [31]16Aug12 [209], 13Aug02 [171]
Rust, chrysanthemum white	19Jun28 [201] [98]
Rust, on evergreens	12May18 [77]
Rust, gymnosporangium	20Jul17 [82], 20Apr03 [97], 20Mar20 [210] 18Jul13 [85], 18May25 [90], 18May11 [211], 18Apr27 [183], 18Apr20 [212], 18Apr13 [60]17Apr28 [175], 17Apr21 [133], 17Mar24 [135]16Jul15 [213], 16May06 [214], 16Apr01 [100] 15Apr17 [215], 15Apr10 [55] 14May16 [76], 14Apr25 [80] 13May24 [3], 13Apr12 [124] [77]13Apr05 [216] 12May18 [77], 12Apr20 [168] 11Aug12 [217], 11Aug05 [218], 11Jun24 [10], 11Apr29 [196], 11Apr15 [219], 11Mar18 [220]
Rust, mayapple	17Jun09 [202]11May06 [128]
Rust, Melampsora	16Jun03 [19] [128]
Rust, on tall fescue	13Sep06 [221]
Rust, pear trellis	19Nov01 [222], 19Sep06 [223] 17Aug25 [224], 17Jul28 [61]
Rust, pine needle	20May22 [96] [222]
Rust, white	16Jul15 [213] [221]
Rust, willow leaf	20Jul17 [82]
Scab, apple	20Apr24 [33] 19Apr05 [59] 18Jul06 [98], 18Apr27 [183], 18Apr20 [212]16May06 [214], 16Apr08 [225], 16Apr01 [100] 15Apr17 [215], 15Apr10 [55] 14May16 [76], 14May02 [56], 14Apr25 [80], 14Apr18 [226] [227]13May24 [3], 13Apr19 [92], 13Apr12 [124] 11Apr01 [227]
Scab, pyracantha	15May29 [20]
Shot hole	18Jun15 [182]17Aug11 [154] (on cherry)
Slime mold	20Jun26 [17] 18Jul13 [85] (dog vomit fungus), 18Jun29 [28] (dog vomit fungus) 17Sep01 [228], 17Aug18 12Aug03 [229] (turf)
Speck, bacterial	18Nov02 [205] (tomato) [85]
Spot, bacterial	18Nov02 [205] (tomato) [205]
Swiss Needle Cast	18Jun29 [28] [228]
Tar and leaf spots on holly	13Jun14 [103], 13May10 [5], 13Apr19 [92], 13Apr05 [216]
Thousand cankers disease	19May03 [153] (new detection found in MD) 14Oct17 [187] (confirmed in Maryland), 14May16 [76] 13Mar29 [230] 11Aug26 [231], 11Jul29 [232], 11Jul22 [198], 11Mar18 [220]
Tobacco rattle virus	20May08 [16] (on bleeding heart) 14Jun20 [89] [116]
Turf, fungal infection	16Mar18 [233] [89]
Volutella	20Apr10 [200] 17Apr28 [175] (pachysandra) 16Apr15 [234] (pachysandra) 12Jul27 [116] (pachysandra) 11Apr29 [196] (pachysandra)
White mold (Sclerotinia)	20May01 [65] 15Apr10 [55] (forsythia)
White smut	16Jul29 [62] (gaillardia)
Yellow patch	18Oct19 [40] [62]

Section:

Integrated Pest Management [235]