Hey guys, good thread.
Goldenseal can be a profitable crop to cultivate, but one of the main limitations is access to affordable planting stock. You almost have to build up your populations, then sub divide the roots for replanting to get it up to scale. The other thing with goldenseal, as Latt mentioned, is that will grow better in a looser tilled soil and produce higher yields. This also means more labor and bed preparation. If you factor in the time and labor costs to revenues produced it can really effect the bottom line for a small producer in the short term.
Here is a link to a study done on the economics of growing woodland medicinals by Michael Jacobson and Eric Burkhart at Penn State University that can give some insight to the economics of growing these plants. Some of you might find it interesting. One aspect of the data presented in this paper, that is variable based on the individual grower, is the labor rate ($). Most of us would probably agree that growing is as a much a labor of love, as it is profit motive.
www.cinram.umn.edu/afta2005/pdf/Jacobson.PDF
Another crop that wasn't previously mentioned in the thread is Black Cohosh. The prices for black cohosh on the wholesale market are low, but there are value added opportunities that growers can take advantage of. Specifically for landscape value. Someone like Whit, who is already exploring nursery development could take advantage of that market. A mature black cohosh in flower can be potted up and sold directly to consumers as a shade landscape plant for appx $15 (Ohio direct marketing price). So $15 for 1 mature plant vs. $4-$5 for a dry Lb.? Bloodroot could also fall into this category, but the price would be a bit lower because it is much smaller.
Ultimately it is important to be diversified in what you grow because trends change.
Rural Action Forestry
www.ruralaction.org