Diagnosing Pink Dogwood Petal Reduction: Need More Information

Additional Questions for Diagnosis

To determine why a 40-year-old pink dogwood in full sun has only two-petal blooms, I need:
- Last fertilization date and type.
- Recent insect history (scale? check leaf undersides for white fuzz, black sooty mold).
- Trunk inspection for borer holes.
- Photos of bark, leaves, branches, and soil base.

Potential Causes

Nutrient imbalance, scale infestation, borer damage, or environmental stress could all reduce flower quality. Provide the requested details for a targeted plan.