Is it possible to add a list of prohibited plants? For example, Hygrophila polysperma in any of its variants is a federally banned noxious weed. It cannot be sold by any of the retailers that we use. Therefore, it really should not be traded or sold here. By allowing this plant or any other federally banned plant to be traded here, we are supporting the transport and sale of an illegal plant that has taken over many of the waterways in the Southern states or has the potential to displace our native flora.