Could be issues with this section.
Quote:
POOR QUALITY MULCH
Fresh hardwood bark or wood chips make very poor mulch in the storage area. The small particles decompose quickly and tie up any nitrogen present, making it unavailable for the tree. Hardwood chips also release substantial concentrations of calcium and manganese. Unfortunately, high levels of manganese are toxic and cause leaf chlorosis and browning of leaf margins.
Solution
* Conifer bark is better for mulch and does not accumulate calcium, manganese, and other elements like hardwood bark.
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We have a thread on mulch, also has reference to a previous article you ran.
Chunky mulch is best