Should bud prolifically too from there so you may need to rub them off if you don't want buds there.
Thanks for the info, and the article!
Yeah, you can see two buds on the lignotuber at the moment; not sure if I'll let them push or not, I know those buds can just sit there for seasons without any activity.
The root crowns on mine were buried for years and I only realized something was going on when 2 of the 3 trees pushed out suckers. I then uncovered the bases and noticed the pronounced swelling and the abrupt transitions from root crown to stem and started thinking they were grafted. The odd thing was that the suckering stems seemed more vigourous than the rest of the plant (which I know is common with suckers, but could indicate root stock dominance over the scion stock) and the foliage on the sucker wasn't quite the same as the rest of the tree.
The majority of the foliage on mine were either not bi-lobed or slightly divided, where the sucker's foliage was deeply bi-lobed which further led me to believe they were grafted and the "normal" ginkgo root stock was beginning to take over.
I wonder now what causes the difference of foliage in the basal growth from the rest of the tree; environmental, genetic, both, or something else all together
? From the article, these lignotubers seem ultra specialized, so there's no telling what's really going on in these.
Thanks for all the help nuts!