| American elm |
Ulmus americana |
1 |
| American hawthorn rust |
Gymnosporangium globosum |
3 |
| annosum root disease |
Heterobasidion annosum |
3 |
| anthracnose |
Apiognomonia spp. |
1 |
| anthracnose |
Colletotrichum spp. |
4 |
| anthracnose |
Discula spp. |
2 |
| anthracnose |
Monostichella spp. |
1 |
| apple scab |
Venturia inaequalis |
13 |
| Armillaria root rot |
Armillaria tabescens |
15 |
| Armillaria root rots |
Armillaria spp. |
2 |
| Ascochyta fungi |
Ascochyta spp. |
2 |
| ash anthracnose |
Gnomoniella fraxini |
2 |
| ash decline |
|
1 |
| ash flower gall mite |
Eriophyes fraxiniflora |
3 |
| ash rusts |
Puccinia sparganioides |
2 |
| ash yellows phytoplasma |
Candidatus Phytoplasma fraxini |
15 |
| Atropellis canker |
Atropellis pinicola |
1 |
| bacteria wilt and soft rot |
Dickeya chrysanthemi |
1 |
| bacterial blight |
Pseudomonas syringae pv. mori |
1 |
| bacterial gummosis |
Pseudomonas syringae |
5 |
| bacterial leaf scorch |
Xylella fastidiosa |
37 |
| bacterial wetwood |
Enterobacter nimipressuralis |
9 |
| balsam gall midge |
Paradiplosis tumifex |
1 |
| beech bark disease |
Nectria coccinea |
2 |
| bitter rot and anthracnose |
Colletotrichum gloeosporioides |
6 |
| black ash decline |
|
2 |
| black knot |
Apiosporina morbosa |
6 |
| black spot of elm |
Stegophora ulmea |
2 |
| black stem, stalk rot |
Thielaviopsis spp. |
1 |
| blue stain |
Ophiostoma huntii |
1 |
| blue stain |
Ophiostoma ips |
2 |
| Blumeriella leaf spot of cherry and plum |
Blumeriella jaapii |
1 |
| boron deficiency |
|
1 |
| Botryosphaeria canker |
Botryosphaeria dothidea |
7 |
| Botryosphaeria canker |
Botryosphaeria rhodina |
1 |
| Botryosphaeria canker |
Botryosphaeria ribis |
3 |
| Botryosphaeria rots and cankers |
Botryosphaeria spp. |
11 |
| brown felt blight of pines |
Neopeckia coulteri |
4 |
| brown root rot |
Phellinus noxius |
3 |
| brown spot needle blight of pine |
Mycosphaerella dearnessii |
6 |
| burl and decay |
|
1 |
| burr knot |
|
2 |
| butternut canker |
Sirococcus clavigignenti-juglandacearum |
7 |
| camellia flower blight |
Ciborinia camelliae |
3 |
| canker |
|
1 |
| cat-faced spider |
Araneus gemmoides |
1 |
| Ceratocystis canker - stain of sycamore |
Ceratocystis fimbriata f.sp. platani |
1 |
| Ceratocystis wilts |
Ceratocystis spp. |
1 |
| Cercospora fungi |
Cercospora spp. |
5 |
| Cercospora fungus |
Cercospora cercidicola |
1 |
| Cercospora fungus |
Cercospora destructiva |
1 |
| Cercospora leaf spot |
Cercospora fici |
1 |
| Cercospora leaf spot |
Cercospora liquidambaris |
1 |
| charcoal rot |
Macrophomina phaseolina |
1 |
| chestnut blight or canker |
Cryphonectria parasitica |
5 |
| chlorosis (general symptom) |
|
2 |
| cold injury (low temperature) |
|
2 |
| construction |
|
1 |
| cooley spruce gall adelgid |
Adelges cooleyi |
1 |
| copper deficiency |
|
3 |
| crown gall |
Rhizobium radiobacter |
25 |
| Cylindrocarpon fungi |
Cylindrocarpon spp. |
1 |
| Cylindrocladium blight and root rot |
Cylindrocladium scoparium |
18 |
| Cylindrocladium fungus |
Cylindrocladium ellipticum |
2 |
| Cylindrocladium root diseases |
Cylindrocladium spp. |
4 |
| Cytospora canker of spruce |
Valsa kunzei |
1 |
| Cytospora cankers |
Cytospora spp. |
11 |
| daylily rust |
Puccinia hemerocallidis |
1 |
| decay |
|
2 |
| desication (wind burn) |
|
1 |
| dieback |
|
2 |
| Diplodia blight |
Sphaeropsis sapinea |
26 |
| dogwood anthracnose |
Discula destructiva |
32 |
| Dothichiza canker |
Dothichiza populea |
1 |
| Dothistroma needle blight |
Mycosphaerella pini |
2 |
| downy mildew |
Plasmopara cercidis |
2 |
| downy spot |
Microstroma juglandis |
1 |
| drippy blight |
Lonsdalea quercina |
8 |
| drought |
|
7 |
| Dutch elm disease |
Ophiostoma ulmi |
38 |
| Dutch elm disease (novi-ulmi) |
Ophiostoma novo-ulmi |
3 |
| Eastern filbert blight |
Anisogramma anomala |
2 |
| eastern pine gall rust |
Cronartium quercuum |
1 |
| Ectomycorrhizae |
Thelephora terrestris |
1 |
| edema |
|
1 |
| Elm yellows |
Phytoplasma |
2 |
| Entomosporium fungus |
Entomosporium spp. |
1 |
| Entomosporium leaf spot |
Diplocarpon mespili |
3 |
| Eutypella canker |
Eutypella parasitica |
17 |
| eye spot |
Phyllosticta minima |
6 |
| fall webworm |
Hyphantria cunea |
2 |
| false tinder polypore |
Phellinus igniarius |
1 |
| fir broom rust |
Melampsorella caryophyllacearum |
1 |
| fire blight |
Erwinia amylovora |
59 |
| flooding/high water |
|
1 |
| frost and winter injury (general) |
|
8 |
| Fusarium root rot and wilt |
Fusarium oxysporum |
2 |
| fusiform rust |
Cronartium quercuum f.sp. fusiforme |
3 |
| gall rust of jack pine |
Cronartium quercuum f.sp. banksianae |
1 |
| Ganoderma root and butt rot |
Ganoderma lucidum |
1 |
| Ganoderma root rots |
Ganoderma spp. |
6 |
| genetic abnormalities |
|
1 |
| Gibberella canker |
Gibberella baccata |
3 |
| glyphosate |
|
1 |
| Graphiola leaf spot |
Graphiola phoenicis |
1 |
| green alga |
Cephaleuros virescens |
15 |
| Guignardia blotch of buckeyes and horsechestnuts |
Guignardia aesculi |
4 |
| hackberry nipplegall maker |
Pachypsylla celtidismamma |
2 |
| herbicides (general) |
|
4 |
| high soil ph |
|
3 |
| hispidus canker |
Inonotus hispidus |
3 |
| Hypoxylon cankers |
Hypoxylon spp. |
1 |
| incense cedar broom rust |
Gymnosporangium libocedri |
1 |
| ink spot leaf blight |
Ciborinia whetzelii |
2 |
| Inonotus heartrot |
Inonotus rickii |
10 |
| iron deficiency |
|
12 |
| Japanese apple rust |
Gymnosporangium yamadae |
1 |
| Japanese pear rust |
Gymnosporangium asiaticum |
2 |
| juniper witches' broom rust |
Gymnosporangium nidus avis |
1 |
| juniper-pear rust |
Gymnosporangium sabinae |
1 |
| Kutilakesa fungus |
Kutilakesa madreeya |
2 |
| Kutilakesa fungus |
Kutilakesa pironii |
2 |
| laurel wilt |
Raffaelea lauricola |
16 |
| leaf blister |
Taphrina spp. |
3 |
| leaf blister of elm |
Taphrina ulmi |
1 |
| leaf curl |
Taphrina communis |
1 |
| leaf scorch of shade trees |
Xylella fastidiosa ssp. multiplex |
1 |
| leaf scorches |
|
1 |
| leaf shotholes |
Cylindrosporium spp. |
8 |
| leaf spot |
Ceratobasidium stevensii |
1 |
| leaf spot |
Passalora sequoiae |
28 |
| leaf spot |
Sonderhenia eucalypticola |
5 |
| leaf spot |
Tubakia dryina |
5 |
| Leptographium root disease |
Leptographium procerum |
3 |
| Leptosphaeria leaf blight |
Leptosphaeria dracaenae |
8 |
| Leucostoma canker of spruce |
Leucostoma kunzei |
1 |
| lichen |
Strigula smaragdula |
9 |
| Lophodermium needle casts |
Lophodermium spp. |
1 |
| magnesium deficiency |
|
11 |
| Marssonina blight of poplar |
Marssonina populi |
3 |
| Marssonina leaf spot |
Marssonina betulae |
2 |
| Marssonina leaf spots |
Marssonina spp. |
2 |
| mechanical |
|
7 |
| Melampsora leaf rust |
Melampsora laricis-populina |
2 |
| milk-white toothed polypore |
Irpex lacteus |
1 |
| mimosa wilt |
Fusarium oxysporum f.sp. perniciosum |
32 |
| Monochaetia fungi |
Monochaetia spp. |
3 |
| Mycosphaerella fungi |
Mycosphaerella spp. |
5 |
| Mycosphaerella leaf spot |
Mycosphaerella cerasella |
3 |
| Nectria canker |
Nectria spp. |
9 |
| needle blight |
Cercospora pini-densiflorae |
3 |
| needle cast |
Lophodermium seditiosum |
2 |
| needlecasts |
Davisomycella spp. |
1 |
| Neonectria canker |
Neonectria galligena |
4 |
| nickel deficiency |
|
5 |
| nuclear polyhedrosis virus |
Nucleopolyhedrovirus |
1 |
| nutrient deficiency |
|
12 |
| oak anthracnose |
Apiognomonia errabunda |
3 |
| oak decline |
|
1 |
| oak leaf blister |
Taphrina caerulescens |
28 |
| oak saucer gall |
Andricus parmula |
1 |
| oak tatters |
|
1 |
| oak wilt |
Ceratocystis fagacearum |
40 |
| ocellate gall midge |
Acericecis ocellaris |
1 |
| orange hobnail canker |
Cryphonectria gyrosa |
2 |
| ozone |
|
1 |
| palm lethal yellowing |
Candidatus Phytoplasma palmae PLY |
1 |
| pecan scab |
Cladosporium caryigenum |
4 |
| Pestalotiopsis leaf spot |
Pestalotiopsis spp. |
1 |
| Phaeosphaeria fungi |
Phaeosphaeria spp. |
2 |
| Phloeospora leaf spot |
Phloeospora spp. |
2 |
| Phomopsis blight |
Phomopsis juniperivora |
3 |
| Phomopsis cankers and twig blights |
Phomopsis spp. |
4 |
| Phyllosticta leaf spots |
Phyllosticta spp. |
10 |
| Phytophthora basal canker |
Phytophthora palmivora |
8 |
| Phytophthora blight |
Phytophthora nicotianae |
8 |
| Phytophthora kernoviae |
Phytophthora kernoviae |
9 |
| Phytophthora root rot |
Phytophthora cactorum |
1 |
| Phytophthora root rot |
Phytophthora cinnamomi |
15 |
| Phytophthora tropicalis |
Phytophthora tropicalis |
1 |
| planting too deep |
|
2 |
| Ploioderma fungi |
Ploioderma spp. |
2 |
| poplar rust |
Melampsora medusae |
1 |
| powderpost beetles |
Trogoxylon spp. |
2 |
| powdery mildew |
Erysiphe flexuosa |
1 |
| powdery mildew |
Erysiphe pulchra |
1 |
| powdery mildew |
Erysiphe spp. |
2 |
| powdery mildew |
Microsphaera penicillata |
4 |
| powdery mildew |
Oidium spp. |
12 |
| powdery mildew |
Phyllactinia guttata |
1 |
| powdery mildew |
Phyllactinia mali |
1 |
| powdery mildew |
Podosphaera leucotricha |
1 |
| powdery mildew |
Sawadaea tulasnei |
1 |
| powdery mildew |
Sphaerotheca phytoptophila |
3 |
| powdery mildew of oak |
Microsphaera alphitoides |
8 |
| powdery mildews |
|
1 |
| Pseudocercospora leaf spot |
Pseudocercospora vitis |
7 |
| Pseudomonas bacterium |
Pseudomonas savastanoi |
1 |
| Pythium diseases |
Pythium spp. |
2 |
| quince rust |
Gymnosporangium clavipes |
10 |
| radiation |
|
1 |
| red heart of pine |
Phellinus pini |
2 |
| redbay ambrosia beetle |
Xyleborus glabratus |
1 |
| Rhizoctonia damping-off, blight and rot |
Rhizoctonia solani |
4 |
| Rhizosphaera needle cast |
Rhizosphaera kalkhoffii |
8 |
| root problems |
|
1 |
| root-knot nematode |
Meloidogyne incognita |
1 |
| rust |
Cerotelium fici |
4 |
| rust |
Coleosporium plumeriae |
1 |
| rust |
Tranzschelia discolor |
5 |
| Seiridium canker of Monterey cypress |
Seiridium cardinale |
3 |
| Seiridium cankers |
Seiridium spp. |
11 |
| Septoria leaf spot |
Septoria cornicola |
4 |
| Septoria leaf spot |
Septoria platanifolia |
4 |
| Septoria leaf spot and cankers |
Septoria spp. |
3 |
| shepherd's crook leaf and shoot blight |
Venturia tremulae |
4 |
| Sirococcus blight of conifers |
Sirococcus conigenus |
5 |
| slime flux |
|
3 |
| smooth patch of oak |
Aleurodiscus oakesii |
1 |
| sooty mold |
|
1 |
| southern blight |
Sclerotium rolfsii |
6 |
| Sphaeropsis tip blights and cankers |
Sphaeropsis spp. |
1 |
| spot anthracnose |
Elsinoe corni |
6 |
| spruce coneworm |
Dioryctria abietella |
1 |
| spruce needle rust |
Chrysomyxa weirii |
2 |
| stem girdling roots |
|
5 |
| Stigmina leaf spot |
Cercospora mangiferae |
1 |
| Stigmina leaf spot |
Stigmina palmivora |
13 |
| Stigmina leaf spots |
Stigmina spp. |
3 |
| Strumella canker |
Urnula craterium |
1 |
| sudden oak death |
Phytophthora ramorum |
66 |
| sunscald |
|
1 |
| sycamore anthracnose |
Apiognomonia veneta |
7 |
| sycamore dieback |
|
2 |
| tar spot |
Rhytisma americanum |
2 |
| tar spot of maple |
Rhytisma acerinum |
6 |
| Thousand Cankers Disease |
Geosmithia morbida |
15 |
| Thyronectria canker |
Thyronectria austroamericana |
7 |
| transplant shock |
|
1 |
| Truncatella fungi |
Truncatella spp. |
1 |
| Tubercularia cankers |
Tubercularia spp. |
1 |
| twig canker |
Lepteutypa cupressi |
2 |
| unknown |
|
2 |
| unknown fungi |
|
4 |
| unknown virus |
|
2 |
| Verticillium wilt |
Verticillium albo atrum |
2 |
| Verticillium wilt |
Verticillium dahliae |
4 |
| Verticillium wilts |
Verticillium spp. |
18 |
| walnut twig beetle |
Pityophthorus juglandis |
3 |
| western gall rust |
Endocronartium harknessii |
2 |
| wet rot |
Coniophora puteana |
1 |
| white heartwood rot |
Phellinus tremulae |
15 |
| white muscadine disease |
Beauveria bassiana |
2 |
| white oak |
Quercus alba |
1 |
| witches' broom |
|
2 |
| wood decay |
Schizophyllum commune |
1 |
| X-disease |
Phytoplasma MLO |
1 |
| yellow birch decline |
|
1 |
| zonate leaf spot |
Grovesinia pyramidalis |
2 |
