Would appear to be a transference of mistaken idea that roots circle in liberally amended planting holes to the topic of mulching. Always mulch around trees, shrubs and other permanent plantings. Arborist wood chips are the best material to use. Spread them 4 inches deep. Keep them back from plant crowns, do not bury stems with mulch or allow it to move down onto stems. Leave a bare area around each crown wide enough to prevent this from happening.

Wow, deja vu from less than 24 hours ago. Right now, litterally the post right next to this one.

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