| Table 7. Some herbaceous ornamentals relatively free of common or serious diseases in the landscape. | |
|---|---|
| Common Name (Genus) | Comments |
| Ageratum (Ageratum) | Powdery mildew and rust, infrequent |
| Alyssum (Alyssum) | |
| Astilbe (Astilbe) | |
| Balloon flower (Platycodon) | |
| Barrenwort (Epimedium) | |
| Balsam (Impatiens) | |
| Begonia (Bedding or fibrous-rooted begonia) | |
| Bellflower (Campanula) | Verticillium wilt reported |
| Bethlehem sage, lungwort (Pulmonaria) | Powdery mildew late summer |
| Bleeding heart (Dicentra) | |
| Caladium (Caladium) | |
| Celosia (Celosia) | |
| Cleome, Spider flower (Cleome) | |
| Coneflower (Echinacea) | Powdery mildew, leaf spot - not serious |
| Coleus (Coleus) | |
| Coralbells (Heuchera) | |
| Cosmos (Cosmos) | |
| Daylily (Hemerocallis) | |
| Ferns (Various species) | |
| Flowering tobacco (Nicotiana) | |
| Forget-me-not (Myosotis) | |
| Gayfeather (Liatris) | Verticillium wilt, infrequent |
| Hellebore, Lenten rose (Helleborus) | |
| Hyacinth (Hyacinthus) | |
| Impatiens (Impatiens) | Verticillium wilt reported when planted repeatedly in same beds. |
| Lisianthus (Lisianthus) | |
| Madagascar periwinkle, Annual vinca (Catharanthus) | |
| Moss rose (Portulaca) | |
| Oenothera, Sundrops (Oenothera) | |
| Poppy (Papaver) | Bacterial blight, infrequent |
| Salvia (Salvia) | |
| Scabiosa, Pin-cushion flower (Scabiosa) | |
| Sedum (Sedum) | |
| Verbena (Verbena) | Powdery mildew--not serious |
| Yarrow (Achillea) | Powdery mildew--not serious |