From Steve www.The-Ultralight-Site.com
Many plants can be used as an antiseptic dressing for cuts, if you have nothing better. One such plant is St. Johnswort. I once applied a few mashed up leaves to a nasty gash on my foot, replacing it occasionally, and I was amazed as it healed in a couple days with no scar. It is known to be anti-bacterial, anti-viral, and anti-fungal.
It’s really good to see things like this being told still, by very experienced hikers as well as herbalists. I’m using comfrey (symphytum) to help the bones heal and join up properly in my newly rebuilt feet.