Adam - Thats the most common thing ive read searching the webs. Most places suggest 2 years, or sometimes 3. Regardless, one is going into pretty much full shade, and the other is going into one of 3 places (I need to do some tree tetris!) which would offer shade for a few years, by existing things or something i put there. The only problem I may have is "deep, well draining and fertile soil", but im optimistic.