Wild orchids of Tanzania are about to vanish because of their large-scale commercial exploitation, states the Wildlife Conservation Society (wcs). According to wcs , popularity of orchids in Zambia has led to their overexploitation. "Millions of orchids are being virtually strip-mined from Tanzania's southern highlands and at current rates many species will be wiped out in a matter of a few years,' said Tim Davenport, conservation biologist of wcs.