Christmas tree cultivation tractors, and shaper sheers. Mechanized planters, at a cost of about US$4,000, are not essential but a work-saving luxury for farmers. Farmers can purchase seedlings, the lifeblood of a Christmas tree farm, from nurseries. One farmer in Oregon purchased seedlings for between US$200–300 per 1,000 plants. The farmer, a wholesaler, sold his final products for about $20 each; after the cost of the trees and other expenses, a profit of $2–3 per tree. The best-selling species in the North American market are Scots pine, Douglas-fir, noble fir, balsam fir, Fraser fir, Virginia pine, and eastern white pine, although other types
Douglas E. Noble of the 2017 American Institute of Architects Los Angeles Chapter Presidential Honor as educator of the year. Noble completed a Bachelor of Science in Architecture and a Bachelor of Architecture at California State Polytechnic University, Pomona, and both a Master of Architecture and Ph.D. at the University of California at Berkeley. His doctoral dissertation built on the work of Horst Rittel by creating a computer supported Issue-based information system. Noble taught for a few years at UC Berkeley and then joined the faculty of the USC School of Architecture in 1991. Noble has taught at USC since 1991, focusing on