Disease Index 2018 - 2024 - Landscape and Nursery IPM Alert

 

DISEASES DATE OF REPORT
Anthracnose

24Apr12 (landscape plants)

19May24 (on strawberry)

Anthracnose, ash 23May12, 19May17
Anthracnose, spot - Elsinoe (on dogwood)

24Apr26

22May06 
18May04
20May08

Anthracnose, sycamore

24May24

23May19, 23May12
21May14  
20Jun26, 20Jun19, 20May08

Apple (disease tolerant) 24Jan17
Aster yellows

24Jun21

23Jul28  
20Jul31
19Aug02

Bacterial leaf scorch 23Jul28  
20Jul31 (oak)
19Aug16 (oak)
Bacterial wilt 18Jun29 (cucurbits)
Beech leaf disease

24Jun14, 24May10

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

24Aug23

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

18Oct19, 18Oct12, 18Aug24

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

19Aug09, 19Apr05
18Apr13

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

24Aug09

23Aug11, 23Jun16 
19Jul26

18Aug17 (hosta)

Blight, tip 24Apr12 (on juniper)
Blight, web (on holly) 22Aug05
Blister, oakleaf 20May29
Botryosphaeria 22Sep30 (dogwoods)  
20Apr24 (redbud)
Botrytis 20Jul24
18Jun29 (lily)
Brown patch in turf

24Aug16, 24May24

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

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

Brown rot on cherry

24Apr12

23Jun09 
22May27  
18May25, 18May18

Cankers 22May13 (Seiridium and Botryosphaeria on Leyland cypress)
Cherry shot hole diseases 20Nov13, 20May22, 20Apr03
18Jul06
Disease activity in early spring

24May17

21Apr16, 21April12

Dollar spot in turf 20Jul24
18Sep14
Downy mildew, basil 22Aug26  
21Oct15, 21Sep10 
20Aug21
19Apr12
Downy mildew, impatiens 19Jul12
Downy mildew, Rudbeckia 20Jul02
Fairy rings in turf

24May17

23Mar17

Fire blight

24May03, 24Apr19

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

Fly speck and sooty blotch on apple 18Sep14
Fruit trees

24Jun14, 24May03 (PA disease report)

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

22Sep09 (late season diseases), 22Mar25 
21Aug27 (late season apple diseases), 21May21, 21Apr3021Apr23, 21April12
19Oct18

Fungus, Septobasium and scale insects 20Aug07
Fungi

24Aug09 (bird's nest fungi)

20Oct16

Fungicide, systemic 24Jul19
Fungus, artillery 22Jul15  
18May18
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

24Oct11

20Oct02

Fungus, stinkhorn 20Sep04
19Aug23
18Jun01
Fungus, white spindles (in turf after rain) 20Aug21
Gall, crown

24Oct25

22Oct21

Gall, exobasidium

24May17

23Jun30, 23May19, 23May12 (on azalea and camellia)
22May20 
21Jun04 
20Jun19, 20May29
19May17

Gall, oak button 23Jun09
Gunignardia aesculi leaf spot on horsechestnut 23Jun23 
22Sep09
16Jun03
Leaf blotch 18Aug03 (on horsechestnut)
Leaf curl, peach

24Oct18, 24May10, 24May03, 24Apr19, 24Feb29

23Apr28, 23Apr07, 23Mar24

22May27, 22May06 
19May03

Leaf spots

24Oct11 (late season)

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, gray 18Oct19, 18Oct05
Leaf spot, on holly 19May03
Leaf spot, Hydrangea 20May29
Leaf spot, on mountain laurel and rhododendron 21Apr23
Leaf spot (on photinia) 22May27
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)
Mushrooms in turf 24Aug16
Needle cast disease 20Apr17 (blue spruce)
19Aug09
Needle diseases 23Apr21
Nostoc (a cyanobacteria)

24May17

23May05

Pink patch disease

24May17, 24May10

Powdery mildew

24Sep06, 24Aug23, 24Aug16, 24Aug02, 24Jul12 (crape myrtle), 24Jun21, 24Jun14, 24May24, 24May17, 24May17, 24Apr12 (euonymus)

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

Red thread in turf

24May17, 24May10, 23Jun23, 23Jun02 
22Jun10, 22May20 
21Jun04 
20Oct23, 20Jul10, 20Apr10
19Jun28, 19May17, 19May10
18May18

Rose mosaic virus 20Apr24
Rose rosette disease

24Oct04

23Sep15  
18Nov02, 18Jun29, 18May04

17Jun16

Rust

24May31 (hollyhock)

23Jul21, 23Jun09 (Asian pear) 
18Jun22 (callery pear)

Rust, cedar apple 18Jul06
Rust, chrysanthemum white 19Jun28
Rust, gymnosporangium

24Jun21, 24Jun14, 24May24, 24May10, 24May03, 24Apr19, 24Apr05

23May05, 23Apr28, 23Apr07, 23Mar31

22May13, 22May06, 22Apr15, 22Apr01 
21Jul0921May07, 20Jul17, 20Apr03, 20Mar20
18Jul13, 18May25, 18May11, 18Apr27, 18Apr20, 18Apr13

Rust, mayapple 21Apr30 (also rust on Jack-in-the-pulpit)
Rust, pear trellis 19Nov01, 19Sep06
Rust, pine needle 20May22
Rust, rose

24Apr26

23Jun16 
22May20

Rust, in turf 23Sep01
Rust, willow leaf 20Jul17
Scab 21May07 (on pyracantha)
Scab, apple

24Apr19, 24Apr12

22Apr15, 22Apr01 
21May14  
20Apr24
19Apr05
18Jul06, 18Apr27, 18Apr20

Shot hole 18Jun15
Slime flux 23Jun23
Slime mold

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

Snow mold, pink 24Apr05
Sooty mold

23Feb15 (and beech blight aphids)

21May28

Speck, bacterial

18Nov02 (tomato)

Summer patch in turf

24Aug16, 24Apr19

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)
Virus problems

23Apr21 (on perennials)

21Jun11 (garlic)

Volutella

24Jul26

22Sep09  
20Apr10

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