Ice
there are more important things to be concerned over than pH in wild simulated.
I have grown in 7.8,6.1,5.1,4.3,6.8,5.6 and 5.8. The 7.8 is the best with the largest growth / year and least disease. (I still replant in this spot with the same results.)Then comes the 5.6 and 5.8 for 2nd best.
I never understood this,I was concerned with all that soil analysis crap and amendments, draggin that stuff into the bush and speadin it was a pain.
Then I ran across a study by Bob Beyfuss were he asked diggers to collect samples of the soil in their best ginseng areas. He could not submit most samples because they were just leaves and duff.
He expanded his study from new york to maine, tenessee,new jersey and kentuck.
Anyway in a nut shell they found a correlation between calcium,magnesium of 10:1. Then he explains the workings of forest soil in ginseng favourable areas and calcium from tree sinks. That I think would best be explained by Bob himself, you should be able to get a copy of AMERICAN GINSENG PRODUCTION IN THE 21ST CENTURY,the 2000 conference proceedings at the Cornell Cooperative Extension of Greene County 906 Greene County Office Building
Cairo, NY 12413.
THIS IS A MUST READ FOR ANYONE THAT IS INTERESTED IN GROWING GINSENG
Guy