The planting pit is excavated to a width equal to one and one-half times the rootball width, containing a central rootball surrounded by a backfill mix. A perforated watering pipe extends thirty-six inches deep alongside the rootball and is enclosed by gravel backfill. The soil surface is finished with a watering basin berm and mulch layer over existing site soil.
1 2 7 6 ROOTBALL BACKFILL MIX: TREE TRUNK WATERING BASIN 1 1/2 X WIDTH OF ROOTBALL 36" 8 5 10 2 4 1 7 6 9 3 11
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