Well, I'll bite on this one. I'm from up here in the timber region, and have worked not only in the wood products industry, but also as a wood worker and furniture maker and luthier. This is only a guess, but species of trees (for a simple general term for a crop) have to be viable and profitable in order to justify expensive effort for cultivation. Up here we mostly plant fir, hemlock, spruce, poplar, and other fairly fast growing species. Concentrating on the ones that you can reasonably expect to harvest within your lifetime. We replant 10 seedlings for each harvested, and lose 30% to predation, disease or drought.... Deer chew them up almost as fast as you get them in the ground.
Hardwoods like Rosewood take generations to reach harvest size.... in the case of many, in the range of several hundred years. As an example, I have a nice piece of Snakewood set aside for a mandolin fretboard. It took 80 years for the tree to grow the 2 inches of diameter to render enough "lumber" to make a half dozen fretboard slabs. It's beautiful wood, dense and tougher than the back wall of a shooting gallery, but not practical as a crop that you might get to cut a couple thousand years from now.
Civilizations can collapse in less time than that!
Take Care;
Doug
"what is this quintessence of dust?" - Shakespeare