'Nantucket Blue' Hydrangea
Hydrangea macrophylla 'Grenan'Nantucket Blue Hydrangea is a beloved reblooming hydrangea known for its classic coastal charm and generous flower production. This mophead variety bursts into bloom early in summer with large, rounded clusters of rich blue flowers in acidic soil, or pink in more alkaline conditions. What sets Nantucket Blue apart is its ability to rebloom on both old and new wood, offering waves of color well into fall. Its lush blooms and dense green foliage create a timeless, romantic look ideal for cottage gardens, borders, and foundation plantings.
Compact yet full in structure, Nantucket Blue typically grows 3–5 feet tall, making it versatile for both small and large landscapes. It thrives in partial shade and adapts well to a range of soil types, offering dependable performance with minimal maintenance. Whether used as a statement specimen or planted in drifts for a more dramatic effect, this hydrangea brings elegance, texture, and a touch of seaside inspiration to any garden. Its long-lasting blooms also make beautiful cut flowers, perfect for adding soft color indoors.
Care Instructions
Planting
Plant in partial shade, ideally with morning sun and afternoon protection. Set the root ball level with the soil surface and allow space for mature spread.
Watering
Maintain consistent moisture, especially during the first year. Water deeply 1–2 times weekly; increase during heat or drought for best bloom quality.
Pruning
Prune lightly after the first flush of blooms. Remove dead or winter-damaged stems but avoid heavy early-spring pruning to protect old-wood buds.
Pest Control
Watch for aphids, mites, and leaf spot. Treat with neem oil or insecticidal soap, and water at the base to reduce fungal issues.
Soil Tips
Grow in rich, well-draining soil. Add aluminum sulfate for blue flowers or lime for pink tones. Incorporate compost annually for improved vigor.
