This landscape detail shows a tree planting assembly featuring a tree rootball set on native subgrade surrounded by amended backfill mix and a mulch layer. A four-inch diameter black flat drain grate sits two inches above finished grade, connected to a four-inch diameter PVC perforated pipe wrapped with filter fabric and bedded six inches below the container depth. The perforated pipe system ties into a main line drain stubout connected to civil drainage. A four-inch minimum height watering berm is positioned twelve inches wider than the rootball diameter.
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