Blister bush, Notububon galbanum  is a species which often grows in the same area as  Notobubon capense but has very different looking leaves. Although their flowerheads look very similar, the nasty blister bush has leaves that look very much like flat-leaved parsley or celery and not the finely divided leaf of Notobubon capense . Even a light touch on the skin from the blister bush can cause painful blistering. Fortunately, Notobubon capense can be touched without harm.

The somewhat smelly flowers attract a range of beetles, including the gorgeous green Common Metallic Longhorn Beetle, the strikingly coloured chestnut-brown and black Net-winged Beetle that warn birds of their poisonous nature (they contain cantharidin) and many other beetle species together with a variety of flies and a number of other insects which presumably all act as pollinators.