Video from the TF1 Journal of September 15, 2006 about the recent ban on the sale (but also on transmitting knowledge and information) of phytosanitary products that have not been authorized.

Ban on nettle manure by econology

More:
The recipe for nettle manure and its possible uses.
Debate on the ban and approval of plant protection products on forums
Nettle manure re-authorized for marketing in 2011?
Linked topic: towards a European ban on phytosan plant-derived medicinal products? Via the Traditional Herbal Medicinal Products Directive (THMPD)

Download file (a newsletter subscription may be required): Ban on nettle manure on TF1