Why One Plum Tree Outgrows Its Twin: The Dog-Urea Connection

Observation

Two 3-year-old plums, same planting, same soil. Backyard tree (less sun, dog urine) is 4x larger than front-yard tree.

Diagnosis

Dog urine supplies nitrogen (urea)—the front-yard tree likely suffers from nitrogen deficiency or pH imbalance limiting nutrient uptake.

Remedy

1. Soil test (best first step).
2. Fertilize front tree: Apply urea-based fertilizer at 0.2 lbs per inch trunk diameter in early spring; water in well.
3. Alternative: Balanced fruit-tree fertilizer (e.g., 10-10-10) at label rate.

Caution

Excess nitrogen can reduce fruiting and increase disease susceptibility. Test, then treat moderately.