We've got a lot of grasshoppers here in eastern Oklahoma this year. They are eating the stems of my cannabis plants. They just eat the outer skin of the stems. When they eat enough so that they remove a complete circle around the stem, the whole stem dies above the circle. I've sprayed with neem oil and garlic. The neem oil doesn't seem to do much. I just started spraying with the garlic and cayenne pepper, and I think that is going to work pretty well. We also are raising some guineas to turn loose in the garden next year. But in the meantime, is there anything I can do to save the stems once the outer skin has been removed? Some kind of salve or jelly that could help the stem heal itself?