I know of a lady who has a plot in Midrand. She's got some interesting stuff like Wormwood, Toadflax, Nettle and many others.
She usually "exhibits" at the Irene Flea Market and the Groenvoer Country Market in Glenn Austen. Here is a reply I got from her via mail:
Apologies for the delay in getting back to you !
We do run a small herb nursery out on a farm here, although we are not set up as a retail nursery as such. However, you are very welcome to make an appointment with either Miriam (nursery manager) or myself and come and visit us out here. We are based out between Irene & Olifantsfontein. Do you know the area at all ? Our operating hours are Mon - Frid 7am-4.30pm. If you are unable to make these times, we can sometimes arrange a saturday morning, but this is dependant on market dates etc. My contact details are (011) 316-3826.
We usually have all our nicest plants at the market, and this is probably the easiest place to buy them from, as they have labels, info & prices directly on the plants. If you know what you would like, you can always let us know the week before, and we can keep them aside for you at the market. So it is up to you, you are welcome to come here, or you are welcome to visit us at the markets. We usually attend the Irene Country Market near Irene/Centurion), and the Groenvoer Country Market (near Midrand). The Irene Market is on the 2nd saturday, and last saturday of EVERY MONTH. The next one falls on Saturday the 14th of Februrary. It is open from 8am-2pm. My advise is to go early 8/9amish, as all the nice things go early, and it gets very busy traffic wise later. The Groenvoer Country Market, is a smaller market, which occurs about every 2 months. The next date for this market is also Sat 14th February 9am-2pm. It is organised by a lady who runs a farming kind of shop & animal feeds etc. Their details are (011) 314-1211 and physical address: 410 Olifantsfontein Rd (R562), Midrand.
I do not have a standard stock & price list or catalogue as such. However, I have a lsit of herbs that we do or can grow for you. Prices vary according to size, availability, quality etc. If you tell me which ones you may be intersted in, I can have a look & send you the availability and prices on those at the moment.
Thank you for your enquiry. Apologies once again for the delay in getting back to you.