I ordered boon mix from amazon, and a bonsai soil from bonsai boy. I live in zone 5. On a bonsai juniper is it best to use the boon mix that has pumice , lava and akadama, or the bonsai soil for bonsai conifer trees? Or could i mix them l like 50/50?

I would go for the trusted Boon mix.

Thats what i will do, the boon mix. Is there any reason i couldn't mix some of the bonsai soil i got fro bonsai boy with the boon mix?

I particularly don't buy anything from BB.
If you have the proven stuff from Boon, why spoil it with some commercial mix we know nothing about? Try it first on some cheap plants to see if it works for you.

Thats what i will do. BTW What is this plant?

This is a Jade or Crassula ovata.

I have been growing jade for almost 20 years now. My whife have cut Them every time she thinks they are getting too big. Without any knowledge of bonsai, they have all come to look like something People without any deeper knowledge would call bonsai. We grow Them in cacti soil and water quite Hevy 1-4 Times a month, depending on season.

Br
Magnus

I had this over 2yrs it was given to me. Just a few days ago i read about pruning this and repotting so thats what my sim is for this week. Actually i did better then i thought it was pretty sickly looking wen i got it. Have s good one.

Yes, it looks really healthy. Well done.

BR
Magnus