Red Dust on my Black Pine?

I saved a black pine from a backyard remodel, unfortunately, I had no control over the extraction process. I have had this pine in an emergency container and it’s doing (So-So) in recovery.

I noticed a reddish-brown powder or dust at some of the tree’s scar area around the tree. What is it? Is it bad? and How can I fix it, (Besides water and O2 balance)

See Photos…


Hey @Big_so-cal_matt,

Nothing to worry about here. That looks typical for a callous. It is something that the tree excretes, not sure what exactly.