Hey guys, There has been some controversy about black listed plants and I thought I should clarify. I took the liberty to do some research and stumbled upon this: http://www.arc.agric.za/home.asp?pid=1031 This is the NB part: and this is the most NB part.. Obviously you cannot trust what you read on the net, so I emailed them. One of my emails was even seen and forwarded on by the DEA. After all this I finally got confirmation from a weed scientists, Ms Lesley Henderson, saying that those plants listed are not allowed to be grown, propagated sold etc. (in the country). Lesley mentioned as well that there are other plants that they are looking to add to that list in future because some of them are becoming a problem. SANA (nurseries) and SAPTA (pet traders) have also agreed to not grow these plants locally even though they are not on the local no grow list. These were the plants mentioned: Azolla microphylla Azolla pinnata subsp. asiatica Cabomba caroliniana Hydrilla verticillata Iris pseudacorus, Ludwigia peruviana Marsilea mutica Nuphar lutea Nymphoides peltata Nymphaea Mexicana Pontederia cordata Sagittaria platyphylla So I'm quite confident, this is the local no grow list. So if you have that hygrophilia difformis that is on the IMPORT BLACK LIST, you ARE allowed to keep it because it is not on the local no grow black list.