Here's an update on an early test sample. The mix in parts was 2 pine bark fines, 2 pro mix bx, and 1 perlite with lime and fertilizer mixed in. My current mix is 3 PBF, 2 perlite, and 1-1/2 pro mix bx with lime and fertilizer. For my rooted cuttings no pro mix just 3-2-0. The older the tree the more Pro mix I will add. So far the mixes drain fast and I have no root rot.
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