Replanting Dogwood After Fungal Loss: Site Preparation and Tree Selection

A beloved 15-year-old pink dogwood died rapidly from fungal disease. The owner wants to replant in the same spot.

Soil-Borne Pathogen Persistence

Many root-rot fungi (Phytophthora, Armillaria) survive years in soil without a host. Poor drainage is the #1 stressor that activates them.

Success Checklist for the New Tree

• Verify drainage: Dig a 12" hole, fill with water. It should drain in <2 hours. Amend or raise the bed if not.
• Buy a healthy, disease-free tree from a reputable nursery. Inspect for bark wounds, cankers, or girdling roots.
• Plant correctly: Root flare at grade, hole 2–3× root ball width, no soil amendments in backfill.
• Protect the trunk: Keep mowers/string trimmers away—mechanical wounds are entry points for borers and pathogens.
• Mulch properly: 2–3 inches, pulled back 3" from trunk. No volcano mulching.

Consult Auburn University’s Dr. Austin Hagan (extension plant pathologist) and the Tree Owner’s Manual (USDA Forest Service) for region-specific guidance.