Cutworms present in ginseng gardens usually nip the stems off at the straw surface. The wilting plant tops can be found beside the stems. There is often a clean break but very small cutworms will chew at one side of larger stems sometimes causing them to bend over. Pounce is registered for use against cutworms in ginseng. Check the label for rates and timing.
Mice can also damage stems.
Check the straw for the presence of tunnels that the mice can use as runways. Stems cut by mice are usually cut lower than cutworms. Emerging plants need to be protected from the Botrytis and Alternaria present in the straw and on last year's stems. Bravo is the best fungicide to provide this protection at this time. Depending on the weather it may not be necessary to add more coverage until the leaves unfold.