Recommendations soil mix Douglas fir

As the title suggest.

Interested in people’s soil mix for Douglas fir.

Thank you in advance

I would suggest either 1-1-1 with the 1/16" (1 mm) in or 2-1-1. Douglas fir tend to grow in the wetter forest areas. I only have a small one, so I am not an expert by any chance, and I have not watched a Douglas fir stream that included repotting to see what Ryan used.

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