CDM Diagnostic Key – Question 1 – No

Lesions on the upper leaf surface can be subtle so check and see if there is water soaking on the lower leaf surface as shown in Fig 6.

If no leaf lesions are present, the plant may have another disease or disorder. Consult with your local Extension office for aid in diagnosis.

Fig 1. Early CDM symptoms on cucumber (Beth K. Gugino, Penn State)
Fig 6. Watersoaking on the lower leaf surface (Beth K. Gugino, Penn State)