by Halagaz » Tue Feb 28, 2012 4:24 pm
Up to the last stage its pretty fast, i would say a week, or a little more for the fastest growing trees if they are planted on their original terrain. A funny thing is that in this game the better quality is the wood the faster the tree is growing, when in real life its exactly the opposite better wood is given by slowest raising trees since they give more compressed grain wood which is more dense and better.
But the last stage is totally random, i have commonly trees grow the last stage after the 3d+ generation have reached full growth, so to give you an idea. But as a general rule, its (almost) always quicker to grow 2 trees in a raw at the forth stage and cut them to get 2 logs, than waiting for the first tree to be at last stage and give you 2 logs. You'll also raise their quality a lot faster like this since the seed at the 4th stage is the same quality as the seed from the 5th stage.
If trees aren't on their original terrain it is a lot longer, maybe twice or triple the time. Use fir for heavy forest terrain, and birch for the light forest, those are the fastest growing trees. They will give you more wood that the slow growing ones even though they give less wood went cut, because they really grow a lot faster. If you do want to grow tree that are not in their original terrain try to pack them and replant them at the same place you cut them since they will turn the terrain around them to their own, so after few gen they'll have their own terrain and grow at full speed.