Everyone says that D. capensis is a weed. I have never been able to get a single seed to germinate (aliciae either). I don't know if I just keep getting old seed or it gets crushed in the mail - but I don't have problems with other types of seed. That's not my question though, if capensis is such a weed is there an environmental factor that limits its spreading or is the area where it grows basically a carpet of plants all crowding each other? Thanks for any information anyone can offer. Stan