Spruce Forest Advice

[AKBonsai]

I have a collection of small spruce trees I collect as saplings from Talkeetna, AK a couple years ago. I would love to turn some/all of these into a forest. I’m not entirely sure what size pot/ type of pot I should get for them. Any advice from anyone out there who has done this before would be awesome.

 

[Shibui]

Pot size depends on how large you want your forest to be. The seedlings are still quite small but they will grow to whatever size you want. That's your choice.

I wouldn't rush these into a bonsai pot. Grow them out in individual post for a few years to get better trunks then put your forest together.
Looks like you may have a couple of seedlings in some of those pots. That's a good thing for group plantings because it helps get some random spacing into the final forest by having a couple of the trees quite close together.