Disease
DiseasesThe most severe diseases of pot mums, such as verticillium wilt, fusarium wilt and stunt, are controlled through culture-indexing programs conducted by large, specialized commercial propagators, such as Yoder, and then by growing disease-free cuttings in pasteurized, well-drained root media. Proper environmental control of ventilation, heating, watering, etc., should control or minimize the occurrence of other pathogens which may infect pot mums. As is readily discernible, disease prevention is more desirable than suppression.
When conditions are favorable, however, some disease organisms may attack pot mums. Following is a table listing some common diseases which can infect pot mums and potential chemical controls.
Before using any pesticides, be sure that they are registered for use in your state. Check with your local county extension agent or state university extension service. See label for use rates and application methods. Always follow label directions.
For additional information on chrysanthemum disease control, refer to Yoder's Tips on Chrysanthemum Disease Control.
| DISEASE |
CHEMICAL CONTROL |
| Root and Stem Rots |
| Pythium |
Chipco Aliette, Subdue MAXX, Truban |
| Rhizoctonia |
Chipco 26019, Cleary's 3336, Medallion, Terraclor |
| Pythium |
Banrot or Subdue MAXX with Medallion and Rhizoctonia |
| Foliar/Flower Pathogens |
| Powdery Mildew |
Pipron, Rubigan, Strike, Systhane, Terraguard |
| Botrytis |
Chipco 26019, Daconil 2787, Exotherm Termil, Medallion, Ornalin (once per crop only) |
| Leaf Spots |
Chipco 26019, Daconil 2787, Dithane T/O |
Insects and Diseases
Disease ControlPest ControlChrysanthemum Stunt BulletinChrysanthemum White Rust BulletinENGLISH Chrysanthemum White Rust PowerPoint PresentationSPANISH Chrysanthemum White Rust PowerPoint PresentationChrysanthemum White Rust Article by NMPRO
To view the above Tip Sheets, which are Portable Document Format (PDF) files, download the free
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