Restoring Blue Color to Hydrangeas: Soil Acidity Solutions

Blue hydrangeas turn pale, white, or pink when soil acidity drops. The fix is to lower soil pH (increase acidity).

Effective Amendments

• Ammonium sulfate – Available at most nurseries; follow package rates.
• Miracid (Miracle-Gro) – Widely sold at Home Depot, Lowe’s, Walmart; formulated for acid-loving plants.

Application Tips

• Water well before and after applying.
• Keep soil consistently moist but not soggy.
• Reapply as directed throughout the growing season.

Ammonium sulfate is still readily available, but Miracid is more convenient for most home gardeners. With regular treatment, your hydrangeas will regain their deep blue hue.