Not to be a party pooper (although I’m trying not to be because I loved the game too), but the trees aren’t permanent. If you try to harvest the item, the tree breaks. It drops a random amount of items per break. Best analogy I can think of is growing wheat in Minecraft. Plant a seed, wait a while, break the finished thing, pick up a few items and chance of another seed.
So for that lovely jet pack tree, you’ll have to destroy the tree, giving you a jet pack (or chance of multiple i don’t remember) plus a chance of a seed which you can rinse and repeat. Or perhaps I’m totally wrong because I haven’t played it in such a long time.
The amazing thing about growtopia is that you get new items by planting two seeds in the same spot. Kinda like a build/tech tree except literal trees.
I remember when 2 friends and I made an entire world our personal farms and it was just loaded with trees and rare items.
Edit: I just remembered that there was something about breaking blocks to get seeds. Not sure about breaking trees anymore. 0 memory recall too op. Either way, it’s much more fun than I’m explaining here. It’s better than FarmVille I swear