I am the original poster of this question (had to open a new account due to password glitch). Hopefully Hubert can chime in here. I use the comfrey as chop and drop, make comfrey tea (Garden usage) for myself as well as giving it away on "tea day" during the growing season for outreach. My
chickens love to eat the comfrey, especially during the spring. I have a friend who makes comfrey salve with added flowers and herbs. The same friend uses comfrey plants as a plant barrier. She has planted a tight band of comfrey around a
raised bed orchard, the comfrey serves as a barrier to keep other plants from invading the bed. Although current wisdom says that comfrey should not be taken internally, some folks still use it as a spring tonic.