Does have a huge effect . Not always desirable for what you need. As was posted earlier there is a lot of variables that go into it. On ring porous woods (Oak ,Ash etc. ) you don't want a lot of growth rings for a bow. Woods like Maple , HHB, etc. would benefit from tight growth rings. Making furniture , or (more critically) Musical instruments will also benefit from Northern grown , or Old growth characteristics. Like people, ........ every piece is an individual!