A very old remedy for baldness is the juice of Jerusalem artichoke.*
The leaves should be gathered green and put into a jar with a very little water. Leave to stew slowly for at least three hours, and do not strain. Rub the liquid into the into the scalp two or three times a week. A neighbor of mine who was ( bald, declares he owed his present growth of hair entirely to this treatment.
I have heard of daffodil leaves and flowers being us the same way with the best possible results. Also an artichoke cut in two and rubbed on the scalp often has the same effect
*The Jerusalem artichoke (Helianthus tuberosus), also called the sunroot or sunchoke or topinambur, is a species of sunflower native to eastern North America.