| Peppermint (Mentha spp.) -- Black Stem Rot | ||
| Cause: A fungus, Phoma strasseri, which is most active during cool, wet weather. | ||
| Symptoms: Dark brown or black cankers on stems or rhizomes, usually at the junction of lateral branches. Cankers may girdle the stem, causing plant parts above the infection to wilt and die. | ||
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| Control: None known at present. | ||
| Content edited by: Cynthia M. Ocamb on January 1, 2009 | ||
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