Thanks for those ideas, but sorry It is neither of the two.. It isn't lamiaceae, no square stem, no blooms that I've ever seen, no particular smell either. I want to eat these little tubers though, someone may stumble upon this thread... :)
The poster denies the four o clocks. She/he would have had to intentionally grow four clocks in the past in order to have this quantity of sprouts ready to come up or dormant seeds always ready to sprout. I've grown four oclocks and seen the single large tubers under full size plants.
The garden areas use to be grass there in the rock bed, but I removed all soil, and put about 70% shell mix back in place.. they hopped right in from the fenceline where there were some apparently going unnoticed.. they are everywhere, just only noticeable in the gardens where we 'showcase' them :P I will try to get a photo of their growing nature. the tubers are always small though, and never ever have seen a bloom. I have 4 'oclock growing in Georgia, and they look nothing of the same, the leaves of this weed are much hardier as well, and can handle being walked lightly. Thank you I will come back with a photo