Disease Index 2016 - 2023 - Landscape and Nursery IPM Alert (links are set back to 2018)

 

DISEASES DATE OF REPORT
Anthracnose 19May24 (on strawberry)
Anthracnose, ash 23May12, 19May17
Anthracnose, spot - Elsinoe (on dogwood) 22May06 
18May04
20May08
Anthracnose, sycamore 23May19, 23May12
21May14  
20Jun26, 20Jun19, 20May08
Aster yellows 23Jul28  
20Jul31
19Aug02
Bacterial leaf scorch 23Jul28  
20Jul31 (oak)
19Aug16 (oak)
17Aug04
Bacterial wilt 18Jun29 (cucurbits)
Beech leaf disease 23Oct27, 23Sep08 (MDA confirms it in MD), 23Jul14, 23May12 
21Aug27 (in Virginia)
19Aug23
18Aug03
Black knot (on Prunus)

23Oct27, 23Jan24  
22Jun03 
21Aug27
17Jun02, 17Mar17

Black spot on roses 20Apr24
19May24
Bacterial blight 21Jul16 (on geraniums)
Bitter rot on apples 22Jun17
Blight, boxwood

22Apr15 
21Aug27 (breeding program)
20Oct09, 20Aug28, 20Apr24
19Apr26 (Risk Model), 19Mar29

18Oct19, 18Oct12, 18Aug24
17Sep29, 17Apr14
16Sep02 (Documentation for shipping to PA), 16Apr29

Blight, brown rot blossom (on Kwanzan cherries) 20May08
Blight, clematis 20Jun19
Blight, Diplodia tip 16Jul22
Blight, eastern filbert

19Aug09, 19Apr05
18Apr13
17Jul28
16Jul29

Blight, late 18Jun08
Blight, lilac bacterial 20May01
Blight, Miscanthus 17July07
16Jul22
Blight, Pestalotiopsis tip 20Sep18
Blight, Phoma (on vinca) 19Jun07
Blight, southern

23Aug11, 23Jun16 
19Jul26

18Aug17 (hosta)
17Jul14

Blight, web (on holly) 22Aug05
Blister, oakleaf 20May29
Botryosphaeria 22Sep30 (dogwoods)  
20Apr24 (redbud)
Botrytis 20Jul24
18Jun29 (lily)
17Jun02
Boxwood decline 17May19
Brown patch in turf

23Jul21, 23Jun23 
21Jul09 
20Jul17 (and nitrogen), 20Jul02
19Jun07

18Sep14, 18Jul13, 18Jun08
17Aug18, 17Jul21

Brown rot on cherry 23Jun09 
22May27  
18May25, 18May18
Cankers 22May13 (Seiridium and Botryosphaeria on Leyland cypress)
Cherry shot hole diseases 20Nov13, 20May22, 20Apr03
18Jul06
16May13, 16Apr01
Disease activity in early spring 21Apr16, 21April12
Dollar spot in turf 20Jul24
18Sep14
17Jul14
Downy mildew, basil 22Aug26  
21Oct15, 21Sep10 
20Aug21
19Apr12
Downy mildew, impatiens 19Jul12
17Sep29, 17July07
16Jul08, 16Jun03
Downy mildew, Rudbeckia 20Jul02
Fairy rings in turf 23Mar17
16Jul08
Fire blight

23May26, 23May19, 23May12, 23Apr28 
22Apr22 
21May10
20Apr17
19Aug23, 19May10
18Jun08, 18May18, 18May04
17Jun02

Fly speck and sooty blotch on apple 18Sep14
Fruit trees

23Jul28, 23Apr28, 23Apr07 (update), 23Mar31 (disease control)

22Sep09 (late season diseases), 22Mar25 
21Aug27 (late season apple diseases), 21May21, 21Apr3021Apr23, 21April12
19Oct18
17May26, 17Apr21 (update), 17Mar31, 17Mar24 (control)

Fungus, Septobasium and scale insects 20Aug07
Fungi 20Oct16
Fungus, artillery 22Jul15  
18May18
17Sep15
Fungus, blue velvet spread 20Sep25
Fungus, carbon crust 20Jun12
Fungus, dog vomit

23Apr07

22Oct28, 22Jun10

Fungus, on oak (smooth patch, white patch, or bark patch) 20Aug14
Fungus, puffball 20Oct02
Fungus, stinkhorn 20Sep04
19Aug23
18Jun01
16Jul01
Fungus, white spindles (in turf after rain) 20Aug21
Gall, cherries 17July07
Gall, crown 22Oct21
Gall, exobasidium 23Jun30, 23May19, 23May12 (on azalea and camellia)
22May20 
21Jun04 
20Jun19, 20May29
19May17
16May20
Gall, oak button 23Jun09
Gunignardia aesculi leaf spot on horsechestnut 23Jun23 
22Sep09
16Jun03
Leaf blotch 18Aug03 (on horsechestnut)
17Aug11 (on horsechestnut)
Leaf curl, peach

23Apr28, 23Apr07, 23Mar24

22May27, 22May06 
19May03

Leaf drop on landscape trees 17July07
Leaf spots 22Oct14 (late season)
Leaf spot, cercospora 20Jul10 (roses)
18May25
Leaf spot, on cherry 19Sep13
18Jul06
Leaf spot, on cherry laurel 19Apr26
Leaf spot, on clematis 18Jun29
Leaf spot, (Entomosporium) 11May27
Leaf spot, gray 18Oct19, 18Oct05
Leaf spot, on holly 19May03
Leaf spot, Hydrangea 20May29
17Jun30
Leaf spot, maple

17May26

16Jul22

Leaf spot, on mountain laurel and rhododendron 21Apr23
Leaf spot (on photinia) 22May27
Leaf spot, persistent (Bermudagrass) 17Jun16
Leaf spot, Septoria 20Jul02 (Rudbeckia)
Leaf spot, Tubakia 20Aug21
19Aug16
Leaf spot, yucca 18Apr06
Leaf streak, daylily 21May07
Marsonnia blotch on apples 19Aug23
18Oct26
Mushrooms
Mushrooms, glowing

23Sep29

20Oct09, 20Oct02 (Jack O'Lantern), 20Sep04

Mushrooms and Conks 23Sep22 (on living trees)
Needle cast disease 20Apr17 (blue spruce)
19Aug09
Needle diseases 23Apr21
Nostoc (a cyanobacteria) 23May05
Pink patch disease 17Apr28
Powdery mildew

23Nov30 (greenhouse), 23Nov03, 23Sep29, 23Sep08, 23Aug25, 23Aug11, 23Jul14, 23Jun30, 23Jun23, 23Jun16, 23Jun02 

22Oct14, 22Sep09 (dogwood and crape myrtle), 22Jul22 (Platanus), 22Jul15, 22Jul08, 22May27, 22May20 (dogwood) 
21Sep10, 21Jun25, 21Apr16 (euonymus)
20Aug07 (dogwood, apple), 20Jul31 (phlox), 20Jul02 (oak and London planetree), 20Jun12 (crape myrtle), 20Jun05, 20May22, 20Apr24
19Aug02, 19Jul12 (crape myrtle and dogwood), 19May24 (rose), 19May10 (dogwood)
18Aug17, 18Aug03, 18Jul20, 18Jun22, 18Jun15, 18Jun01, 18Apr27
17Jul28, 17Jul21, 17Jul14, 17July07, 17May19, 17May05 (bluegrass lawns), 17Apr14
16Jul22, 16Jul08, 16Jun17, 16Jun03 (dogwood), 16May13

Red thread in turf

23Jun23, 23Jun02 
22Jun10, 22May20 
21Jun04 
20Oct23, 20Jul10, 20Apr10
19Jun28, 19May17, 19May10
18May18
17Jun09
16May13

Rose mosaic virus 20Apr24
Rose rosette disease

23Sep15  
18Nov02, 18Jun29, 18May04

17Jun16

Rust 23Jul21, 23Jun09 (Asian pear) 
18Jun22 (callery pear)
Rust, cedar apple 18Jul06
17Jun02
16Aug12
Rust, chrysanthemum white 19Jun28
Rust, gymnosporangium

23May05, 23Apr28, 23Apr07, 23Mar31

22May13, 22May06, 22Apr15, 22Apr01 
21Jul0921May07, 20Jul17, 20Apr03, 20Mar20
18Jul13, 18May25, 18May11, 18Apr27, 18Apr20, 18Apr13
17Apr28, 17Apr21, 17Mar24
16Jul15, 16May06, 16Apr01

Rust, mayapple 21Apr30 (also rust on Jack-in-the-pulpit)
17Jun09
Rust, Melampsora 16Jun03
Rust, pear trellis 19Nov01, 19Sep06
17Aug25, 17Jul28
Rust, pine needle 20May22
Rust, rose 23Jun16 
22May20
Rust, in turf 23Sep01
Rust, white 16Jul15
Rust, willow leaf 20Jul17
Scab 21May07 (on pyracantha)
Scab, apple 22Apr15, 22Apr01 
21May14  
20Apr24
19Apr05
18Jul06, 18Apr27, 18Apr20
16May06, 16Apr08, 16Apr01
Shot hole 18Jun15
17Aug11 (on cherry)
Slime flux 23Jun23
Slime mold

23Jun30 
21Jul16 
20Jun26
18Jul13 (dog vomit fungus), 18Jun29 (dog vomit fungus)
17Sep01, 17Aug18

Sooty mold

23Feb15 (and beech blight aphids)

21May28

Speck, bacterial

18Nov02 (tomato)

Summer patch in turf 23Apr07
Swiss needle cast 18Jun29
Taphrina diseases 21May28 (on oaks and peaches)
Thousand cankers 19May03 (new detection found in MD)
Tobacco rattle virus 20May08 (on bleeding heart)
Turf, fungal infection 16Mar18
Virus problems

23Apr21 (on perennials)

21Jun11 (garlic)

Volutella

22Sep09  
20Apr10
17Apr28 (pachysandra)

16Apr15 (pachysandra)

Web blight on holly 21Jul02
White mold (Sclerotinia) 23Feb15, 20May01
White smut 16Jul29 (gaillardia)
Yellow patch 18Oct19