I have some of both growing from seed. The spruce came from my own existing trees. Unfortunately the voles tore them up in my garage. I have a few dawn seedlings alive in a single pot in my basement. A couple of giant sequoias as well.
I have some random trees that I grow. The voles wiped out a lot. I have a few white willows in air pots from cuttings that are growing well. Some need to be upsized. Some of my black walnuts survived the attacks and most of the pawpaws did as well. This year I already have a few chinquapins and macadamia nuts that have their radicles emerged. I have more pawpaws, butternut, and some ginko that are still stratifying.
I have a bunch of northern catalpa growing together in a fabric pot that probably needs to be separated and repotted while dormant.
If there's a particular tree you like and you don't mind experimenting you can find seeds for almost anything on sheffields. I like the air pots because the roots don't get tangled around themselves like in standard pots. I'll have to show you a pic of one of my willows with the air pot removed. It's a fobrous mass of roots.
You could probably grow a cold hard fig down there as well. In extreme cold it may die back, but it would fire right back up in the spring. You seem to be more into ornamentals though.