I have a couple of trees and it is coming up on time to repotting. I have a couple of junipers, a spur and a trident maple. What kind of soil should I use

This is such a common question, i would recommend searching the forum. Everybody has their own preferences, and it comes down to local conditions and care. Search, come to a conclusion and then ask a.bit.more specific question.

Welcome to the empire.

Yes thank you I have looked it up but I guess I should have better worded my question. I know a good soil but I was looking for opinion on what other ppl use, I was going to try a akadoma, pumice and lava rock mixture. Thank you

Akadama lava rock perlite pumice zeolite all these can be good it really is a matter of choice and preference, but I would never use akadama to juniper

Do I use Potting Mix as well as compost.
What size pot should I start with
Do I put all the seeds in this pot and mixture

Thanks
John

Why not on a juniper? Maybe use a compost soil instead of akadoma?