Why Limelight Hydrangea Leaves Yellow Before Blooming

A gardener reports that three Limelight hydrangeas look beautiful until just before blooming, when leaves turn yellow and drop. This has happened for three consecutive years.

The likely cause: nutrient deficiency in shallow, chalky, or poorly drained soil. Hydrangeas need deep, rich, moisture-retentive yet well-drained soil. Yellowing leaves often indicate lack of iron, manganese, or nitrogen.

Remedies: if possible, move plants to a better site. Regardless, apply a complete fertilizer with trace elements (available at garden centers) and ensure consistent watering. A soil test can pinpoint specific deficiencies.