... get that last whiney post off the top of the page! Turns out the mystery plant that smelled "oniony"?
It is garlic. The pods at the top have been splitting and little plump seedy things are jammed in there like sardines. And they, they smell exactly like garlic. Upon googling up some images of "garlic plants" I find several pix that are dead on. Unless I read it wrong, this September we should have a pretty decent crop o' garlic. The bulbs. That's what ya eat.