Jughead,
If you are limiting your plantings to under maple/poplar trees - you may not even need to add calcium.
In his book Scott mentions ideal locations for north and south as far as areas that are dominated by different types of trees and sugar maples and tulip (or yellow) poplars are the two he mentions first. He also mentions Carolina silver bells and Black Wallnuts.
Look for areas where the ginseng will get the cool sunlight of early morning but then be shaded well from the hot/late evening sun.
High Calcium, Low PH soils were consistently associated with the most vigorous and healthy wild ginseng stands.
The study done in New York showed that the most vigorous stands were found in areas that had PH averaging around 5.0 and calcium levels in the 4000/lb per acre range.
Later on he mentioned that sugar maple leaves when analized showed they contained 1.81% calcium and also mentioned that tulip poplar and black walnut trees also store calcium in their leaves but did not list a % for them.
I looked around online a bit and found a fairly big named store that is showing both calcium and bonemeal in their products list.
See the AceHardware Superstore (link below)
It will start you out on their gypsum product that looks good and nice price (around 7.00 for 40lb bag) and on down at the bottom of the page they show that bone meal that is also available at walmart.
PS - one caution on the bone meal - Dogs Love It. I am sure that Fox/Yote's etc would too. When I put it on my garden my daughters australian shepard will come over and lick it right up off the dirt. It needs to be worked into the soil and if possible watered good.
Good Luck !
TNhunter
www.acehardwaresuperstore.com/topgrow-pe...-p-62512.html?ref=42