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"Most of what you need is online."
Where, besides
Tree Planting Information
which is just a start?
"If all the soil is removed, and you don't virtually make a mud out of the backfill, proper soil contact with roots and root hairs may not happen right.'
1. Blending in compost-rich soil can avoid the problem of big air pockets. {Thou shalt not amend} is a myth.
2. What is wrong with making mud (soil + water)??
"Sometimes, complete soil removal and "teasing" of roots to spread them out, can result in total destruction of backfill soil structure."
What? How is structure of soil destroyed by removing it?
"If the roots are in a ball of real soil, I usualy leave the ball alone and pull circling roots loose, if any."
What is "real soil"? And how do you know there are no interior circling or girdling roots, if you do not look?
I don't know where you are buying your trees, but do not buy a pig in a poke. Inspect the roots, compare root volume to the table in the BMP.
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For starters, "real soil" would be something more typical to a local soil versus a near fine barkdust potting mix used by some nurseries.
You must know that already.
And the internet is so extensive, with reams of university extension websites and some rather decent forums, that pages on planting are not hard to come by.
Putting aside some inconsequential questions like "interior circling", I find it much more important to retain the solidarity of what appears to be a sound rootball, especially around April or later in our area. We have had near 100 degree weather late May before. And at least here, get hardly any rain in summer.
Bare root sounds fine to me after the end of October to like the end of March.