Emerald Green Arborvitae Dieback: Clay Soil, Planting Depth, and Recovery

Emerald Green arborvitae turning yellow-brown in Georgia clay soil after spring planting signals classic establishment failure. Two critical factors: heavy clay retains excess moisture, suffocating roots, and planting depth—even 2-3 inches high—can be problematic if the root flare is buried.

Your planting method was sound: wide hole, burlap removal, soil amendment, and planting slightly high. The nursery's objection to burlap removal is incorrect—modern synthetic burlap doesn't decompose and restricts roots. Natural burlap should be removed or cut away completely.

Scotts' advice to plant at grade ignores the reality of nursery-grown trees with buried root flares. Planting high compensates for settling and improves drainage.

To save remaining trees: reduce watering to twice weekly only if soil is dry at 4-inch depth. Apply a balanced, slow-release fertilizer. Mulch 3 inches deep, keeping it off the trunk. Monitor for spider mites (common on stressed arborvitae). If clay drainage is truly poor, consider installing a French drain or replanting on a raised berm.