Just a couple years after clear cutting or hard select cutting a hollow it will be all grown up with saplings and briars and otehr tall weeds and stuff 6-8' tall.
I am sure the seng still sends up a top in the spring but it may get burnt up by too much sun the first year or two, the top may die back early summer, then try sending up another top the next spring.
There are a couple months in the early spring, part of april and early may where I expect it does fine with extra sun exposure, but then may die back early when it gets too hot and the sun to intense.
But after just a few years the saplings and other tall weeds and briars start to offer it more shade and I am sure that it comes back OK after that.
I have found some really good seng in areas that were clear cut 20 years ago, or select cut hard 15-20 years ago. It is often still thick with underbrush and briars but if you can wade thru all that mess there is some good seng to be found.
I think those conditions discourage most seng hunters and the seng sort of gets a little vacation while growing in that mess, and reproduces well.
Now when the top does die back or just does not send up a top (being dormant for a year or two) I don't think there is any root growth. I remember Scott mentioning that in his book.
He also said that most folks growing wild-simulated seng should consider removing the flower spike from the plants in early spring. Producing seeds takes away from root growth a bit. Best I remember he said it was something like 20% - or if you removed the flower spike rather than letting them flowr and set fruit, produce berries/seeds - then you would gain about 20% more root growth per year.
You might establish a few patches for berry production but then on the other patches remove the flower spike in the spring.
TNhunter