Other Diseases of Ornamental Flowers and Foliage
Ornamental Flowers and Foliage |
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| Host | Disease | Pathogen | Occurrence |
| African Violet | Root rot Powdery mildew |
Pythium spp. (F) Oidium sp. (F) |
Widespread Widespread |
| Begonia | Bacterial leaf spot Botrytis blight Powdery mildew Root and stem rot Tomato ring spot Tomato spotted wilt |
Pseudomonas sp. (B) Botrytis cinerea (F) Erysiphe cichoracearum (F) Pythium sp. (F) virus virus |
Occasional Widespread Widespread Widespread Occasional Occasional |
| Carnation | Fusarium wilt | Fusarium oxysporum f. dianthi (F) | Occasional |
| Chrysanthemum | Tomato ring spot Tomato spotted wilt |
virus virus |
Occasional Occasional |
| Clematis | Crown rot | Rhizoctonia sp. (F) | Occasional |
| Coleus | Botrytis blight | Botrytis cinerea (F) | Widespread |
| English Ivy | Bacterial leaf spot Fungal leaf spot |
Xanthomonas sp. (B) several fungi |
Widespread Widespread |
| Geranium | Bacterial leaf spot Black leg Botrytis blight Crown gall Edema (oedema) Root-knot nematode Rust Wilt |
Xanthomonas pelargonii (B) Pythium sp. (F) Botrytis cinerea (F) Agrobacterium tumefaciens(B) environmental (A) Meloidogyne spp. Puccinia pelargonii-zonalis (F) Verticillium dahliae (F) |
Occasional Occasional Widespread Occasional Widespread Occasional Occasional Widespread |
| Gladiolus | Yellows | Fusarium oxysporum (F) | Occasional |
| Hollyhock | Rust | Puccinia malvacearum (F) | Widespread |
| Hyacinth | Bacterial soft rot | Erwinia carotovora (B) | Occasional |
| Iris | Bacterial soft rot Rhizome rot Root rot |
Erwinia carotovora (B) Botrytis convoluta (F) Fusarium sp. (F) |
Occasional Occasional Occasional |
| Marigold | Root rot White mold |
Pythium sp. (F) Sclerotinia sclerotiorum (F) |
Occasional Widespread |
| Pansy | Powdery mildew Root rot |
Erysiphe cichoracearum (F) Phytophthora sp. (F) |
Occasional Widespread |
| Peony | Dry root rot | Fusarium sp. (F) | Occasional |
| Petunia | Root-knot nematode Root rot |
Meloidogyne sp. Pythium sp., Phytophthora sp., Rhizoctonia sp. (F) Sclerotinia sclerotiorum (F) |
Occasional Widespread |
| Poinsettia | Root rot Root and crown rot |
Pythium spp. (F) Rhizoctonia solani (F) |
Widespread Occasional |
| Rose | Black spot Crown gall Downy mildew Mosaic Powdery mildew Root rot Rust |
Marssonina rosae (F) Agrobacterium tumefaciens (B) Peronospora sparsa (F) virus Sphaerotheca pannosa (F) Phytophthora sp. (F) Phragmidium mucronatum (F) |
Occasional Widespread Rare Widespread Widespread Widespread Occasional |
| Snapdragon | Downy mildew Rust Wilt White mold |
Peronospora antirrhini (F) Puccinia antirrhini (F) Verticillium albo-atrum (F) Sclerotinia sclerotiorum (F) |
Occasional Occasional Widespread Widespread |
| Vinca minor | Die-back Root rot |
Phoma exigua (F) Rhizoctonia solani (F) |
Widespread Widespread |
| Zinnia | Powdery mildew White mold |
Erysiphe cichoracearum (F) Sclerotinia sclerotiorum (F) |
Widespread Widespread |