A state-of-the-art 50,000-sq ft greenhouse, heated by geothermal energy, was recently put into operation in Klamath Falls, Oregon. The greenhouse, which uses technology that has long helped Canada dominate the market for tree seedlings is operated by IFA Nurseries, Inc., based in Canby, Oregon. The facility can raise about two million seedlings of ponderosa pine, Douglas fir, hemlock and other species, depending upon the demand of customers. Eventually, they plan to have four greenhouses in operation, producing about eight million seedlings a year. A second greenhouse is currently under construction and will be ready for use this fall