Drying Comfrey

Here is a bit of our comfrey patch. You can see some is going to flower. We are a bit unsure about drying. For us, the easiest way to dry is in our dehydrator but we haven't seen a lot of information on the web specifically about drying comfrey this way. We keep the temp as low as our machine will go -  below 95, but we don't have a "just air" feature.