Arborvitae Killed by Dog Urine: Acid Soil Solutions

45 arborvitae, 3 yrs. Dog pen (pea gravel) uphill; 10 trees downhill dead + 2 random. Female dogs squat. Urine acidic; arborvitae prefer alkaline.

Solutions

Aluminum sulfate (garden centers) watered in to alkalize soil. Reapply frequently (urine continuous).
Deep watering to leach acidity.
Barrier: Low fence + 6" deep edging between pen and trees.
If replacing: Choose acid-loving shrubs (most others).

Test on remaining trees first.

Expert insight provided by Melissa.

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