I don't have any clear cut (hah) ideas yet about how to get the trees to work well, but here's some things I've noticed:
1. There's a tension between the rate of tree growth at home and in public places.
2. There's a tension between the amount of tending needed at home and in public places.
3. The tangible reward for going to the trouble of making and planting seeds in public places, to keep the word sustained, is slight.
4. The placement of different types of trees in the world, when players are responsible for this, is erratic.
I would think the rate of growth will work itself out as the game is open for longer times. It would be good if the trees don't die too quickly. I suspect they've been set to die quickly for the brief bits of game play. If it takes a long time to finish the quest of growing them in your own home, I'm not sure that's a big deal. Some of the quests and some of the projects can reasonably take a long time and one hopes that when the game is open for longer stretches that people will be more patient than they are right now.
The amount of tending needed in the different places seems to be an issue. Public trees should need and get lots of tending. Private trees should be able to survive without lots of tending. Possibly tree tenders are called for to address this issue.
I find making seasoned beans a bit of a chore, though I have done so to fill in blank spots a few times. Probably there should be more reward attached to this sort of necessary maintenance. (Part of what is a chore for me is that some of the ingredients I'm not going to be carrying around -- beer and hooch. I think the other ingredients are from trees or can be made from the products of trees. Possibly, all of the ingredients should have that path.)
I think there is a goal right now with the interchangeable trees thing to let players design the world a bit. And I do think that that notion is unfortunately absent from the game right now. But I don't think choosing which tree to plant is actually much of a creative act. Meanwhile, it's confusing as a player to try to guess which area has which type of trees Right Now, since it's possibly all changed since the last time one was playing. I tend to think it would be better if it all worked more like the eggplants. I know where to go to find eggs, or to try to plant an eggplant seed.
One more thing: Why can't I chop down a tree before it's "dead"? I suspect this should be allowed. One of the dynamics that is increasingly apparent in the game is the tension between different uses for the tree-spot resource. (And I suspect there will be more.) When people need dirt, they recklessly dig instead of plant, which can lead to a dearth of trees. I have been cursed for planting when someone impatiently wanted the dirt to complete a project. (Again, I think some players should take a pill, but I digress...) So if I want my dirt, dammit, maybe I should be able to just chop that tree down and take my dirt.
Players as rooks, destroying public things to grab resources, should possibly be one of the dynamics of the game.