Drug Plants Under Cultivation

If the trees are pruned properly, a crop of bark may be harvested each year without killing the whole tree, as is done in collecting the bark from wild trees. At the time of tra...

Pennyroyal grows well on average upland soils and is frequently abundant on sandy or gravelly slopes. In field planting the seeds should be sown in rows in the fall and covered...

Yields at the rate of 3 or 4 tons of dried root per acre have been obtained from small plats. The prewar price paid to collectors varied from year to year and usually ranged fro...

Ginseng (_Panax quinquefolium_) is a fleshy-rooted herbaceous plant native to this country and formerly of frequent occurrence in shady, well-drained situations in hardwood fore...

Although the average value of crude drugs, expressed in terms of money, has more than doubled since 1913, it does not follow that their production offers a corresponding increas...

This Bulletin gives general suggestions relative to the culture, harvesting, distillation, yield, marketing, and commercial prospects for drug plants. Specific information is al...

Valerian grows well in all ordinary soils, but thrives in a rich and rather heavy loam which is well supplied with moisture. It may be readily propagated by dividing the old roo...