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) | |
| Anthracnose, sycamore | |
| Apple (disease tolerant) | 24Jan17 |
| Aster yellows | |
| Bacterial leaf scorch | 23Jul28 20Jul31 (oak) 19Aug16 (oak) |
| Bacterial wilt | 18Jun29 (cucurbits) |
| Beech leaf disease |
23Oct27, 23Sep08 (MDA confirms it in MD), 23Jul14, 23May12 |
| Black knot (on Prunus) | |
| Black spot on roses | 20Apr24 19May24 |
| Bacterial blight | 21Jul16 (on geraniums) |
| Bitter rot on apples | 22Jun17 |
| Blight, boxwood |
22Apr15 |
| Blight, brown rot blossom (on Kwanzan cherries) | 20May08 |
| Blight, clematis | 20Jun19 |
| Blight, Diplodia tip | 16Jul22 |
| Blight, eastern filbert | |
| Blight, late | 18Jun08 |
| Blight, lilac bacterial | 20May01 |
| Blight, Pestalotiopsis tip | 20Sep18 |
| Blight, Phoma (on vinca) | 19Jun07 |
| Blight, southern |
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 |
23Jul21, 23Jun23 |
| Brown rot on cherry | |
| Cankers | 22May13 (Seiridium and Botryosphaeria on Leyland cypress) |
| Cherry shot hole diseases | 20Nov13, 20May22, 20Apr03 18Jul06 |
| Disease activity in early spring | |
| 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 | |
| Fire blight |
23May26, 23May19, 23May12, 23Apr28 |
| 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 |
| Fungus, Septobasium and scale insects | 20Aug07 |
| Fungi |
24Aug09 (bird's nest fungi) |
| Fungicide, systemic | 24Jul19 |
| Fungus, artillery | 22Jul15 18May18 |
| Fungus, blue velvet spread | 20Sep25 |
| Fungus, carbon crust | 20Jun12 |
| Fungus, dog vomit | |
| Fungus, on oak (smooth patch, white patch, or bark patch) | 20Aug14 |
| Fungus, puffball | |
| Fungus, stinkhorn | 20Sep04 19Aug23 18Jun01 |
| Fungus, white spindles (in turf after rain) | 20Aug21 |
| Gall, crown | |
| Gall, exobasidium |
23Jun30, 23May19, 23May12 (on azalea and camellia) |
| Gall, oak button | 23Jun09 |
| Gunignardia aesculi leaf spot on horsechestnut | 23Jun23 22Sep09 16Jun03 |
| Leaf blotch | 18Aug03 (on horsechestnut) |
| Leaf curl, peach | |
| 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 |
|
| Mushrooms and Conks | 23Sep22 (on living trees) |
| Mushrooms in turf | 24Aug16 |
| Needle cast disease | 20Apr17 (blue spruce) 19Aug09 |
| Needle diseases | 23Apr21 |
| Nostoc (a cyanobacteria) | |
| Pink patch disease | |
| 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) |
| Red thread in turf |
24May17, 24May10, 23Jun23, 23Jun02 |
| Rose mosaic virus | 20Apr24 |
| Rose rosette disease |
23Sep15 17Jun16 |
| Rust |
24May31 (hollyhock) |
| 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 |
| Rust, mayapple | 21Apr30 (also rust on Jack-in-the-pulpit) |
| Rust, pear trellis | 19Nov01, 19Sep06 |
| Rust, pine needle | 20May22 |
| Rust, rose | |
| Rust, in turf | 23Sep01 |
| Rust, willow leaf | 20Jul17 |
| Scab | 21May07 (on pyracantha) |
| Scab, apple |
22Apr15, 22Apr01 |
| Shot hole | 18Jun15 |
| Slime flux | 23Jun23 |
| Slime mold |
23Jun30 |
| Snow mold, pink | 24Apr05 |
| Sooty mold |
23Feb15 (and beech blight aphids) |
| Speck, bacterial |
18Nov02 (tomato) |
| Summer patch in turf | |
| 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 | |
| Web blight on holly | 21Jul02 |
| White mold (Sclerotinia) | 23Feb15, 20May01 |
| Yellow patch | 18Oct19 |