New Hydrangea Wilting and Stem Dieback: Watering and Soil Acidity Fixes

A newly planted hydrangea near Chicago (4 weeks no rain) wilted, center stem died, stalks have black spots, but new growth and blooms appeared.

Diagnosis

• Transplant shock – Common in woody plants.
• Underwatering – 4 weeks without rain is severe.
• Soil pH – Hydrangeas need acidic soil.

Action

• Water deeply once a week (3–4 gallons).
• Apply Miracid (acidifying fertilizer) per label.
• Don’t let soil dry out completely.

The new growth is a good sign. Consistent moisture and acidity will secure its future.