Prickly Pear Cactus

A plant from Ultima Online. Does not produce cactus apples. Why would a plant with the word pear produce apples? It doesn't matter, because it doesn't.
If you thought maybe because pottable plants don't produce resources, all non-mutants produce seeds, so it's not a game mechanic restriction. If you thought that maybe it does produce them, just not the ones we grow, bananas are able to be looted by killing gorillas and there are banana trees, but you can't grow one or harvest a banana from the trees. So, that's not it either. There are no grapevines in the game, but there are bunches of grapes you can conjure with magery. So...
Prickly Pear Cactus from Ultima Online don't produce prickly pears.