Hey guys! About to join the group but wanted to post this now to get some heads up if possible ahead of time.
I found Yoshino and Kwanzan cherry blossums x2 I really love. They are seedlings (should be similar to the uploaded image). I took care of an Acer Palmatum a couple years ago for a year and it did very well. I had a good cycle with it and believe it remained healthy through all 4 seasons. It died because of personal troubles leading to an inability to keep the soil from drying.

Basically - I think I can take care of these guys well, but they are coming as mailed saplings. I am doing massive research, but any first impressions/thoughts you can throw my way to ensure they do well right off?
So you all know, I will look into potting them and will put them in an external shed for the winter around Thanksgiving unless I find I should do otherwise.
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Update:
Already ran into one key question. I get why larger grain soils and mixtures are a good idea, but what about for a 1 year old seedling? Should I get potting soil? Mix it 50/50 with the larger particulate?
Still digging in forums so be gentle.
Thanks!
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Hmm I'm finding almost nothing about these Sakura in Colorado, so I am starting to worry our climate doesn't allow for it, but I believe I have seen them full size here.