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Endless Summer® BloomStruck® Hydrangea
Hydrangea macrophylla 'P11HM-11' PP25566, CPBR#5146
“The BloomStruck Hydrangea is one of my all-time favorites because it delivers color and reliability in every region. Whether you like bold pinks or rich blues, this hydrangea adapts to your soil and keeps blooming long after others fade. Strong stems, nonstop flowers, and easy care—what more could you ask for?”
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Endless Summer® BloomStruck® Hydrangea – Vibrant Reblooming Hydrangea with Blue and Pink Blooms
Color that won’t quit from summer through fall.
The Endless Summer® BloomStruck® Hydrangea (Hydrangea macrophylla ‘PIIHM-II’) delivers intense, ever-changing color on a shrub that blooms all season long. Its large mophead flowers range from vibrant pink to rich violet-blue, depending on your soil pH, and its dark red stems and glossy green leaves create a dramatic contrast. BloomStruck offers stronger stems, improved heat tolerance, and longer bloom duration than most hydrangeas—making it a favorite for gardeners across the country.
A reblooming hydrangea for every climate.
BloomStruck is part of the renowned Endless Summer® series, bred to bloom on both old and new wood, guaranteeing continuous flowers from early summer until frost. It thrives in USDA Zones 4–9, tolerating both cold northern winters and hot southern summers. Its strong, upright stems keep the blooms from drooping, even after rain, and its compact growth habit—3 to 4 feet tall and wide—makes it ideal for small gardens, containers, and foundation beds.
Dynamic color and reliable performance.
This hydrangea’s stunning blooms shift colors throughout the season based on soil acidity—pink in alkaline soil, purple in neutral soil, and blue in acidic soil. Each flower cluster measures up to 5 inches across, producing an eye-catching display from June through fall. Combined with deep green leaves and a red-hued stem, BloomStruck’s color palette delivers unmatched visual impact in any landscape.
Low-maintenance beauty, endless versatility.
BloomStruck Hydrangea is a proven performer with superior disease resistance, strong roots, and a compact, rounded shape. Whether you’re planting it in beds, pots, or borders, this hydrangea adds lasting color with very little upkeep. From curb appeal to cut flower arrangements, BloomStruck brings year-round value to gardens of every size.
| Hardiness Zone: | 4-9 |
|---|---|
| Mature Height: | 3 to 4 feet |
| Mature Width: | 3 to 4 feet |
| Classification: | Broad leaved deciduous shrub, summer flowering |
| Sunlight: | Partial shade |
| Habit: | Mounding |
| Foliage: | Dark green |
| Flower Color: | Violet blue in acid soil; deep rose in alkaline soil |
| Pruning Season: | Prune in late winter or early spring, flowers on old and new wood |
| Soil Condition: | Any well drained soil |
| Water Requirements: | Water well until established |
| Uses: | Extremely attractive when used as a focal point in the mixed border, mass planting, or a specimen planting |
How to Care for Endless Summer® BloomStruck® Hydrangea
Be sure to read our planting instructions to ensure a healthy and happy Endless Summer Bloomstruck Hydrangea plant for years to come!
How do I plant an Endless Summer BloomStruck Hydrangea?
Plant in well-drained, fertile soil with access to morning sun and afternoon shade for best results. Dig a hole twice the width of the root ball and place the shrub so the top of the root ball is level with the soil surface. Backfill, water thoroughly, and apply a 2-3 inch mulch layer to retain moisture and protect roots. Avoid sites with standing water—hydrangeas prefer evenly moist but not soggy soil.
How often should I water BloomStruck Hydrangea?
Keep soil consistently moist, especially during the first growing season. Water deeply once or twice a week, more often during hot or dry weather. Consistent watering helps maintain vibrant color and prevents leaf wilt. Mulch helps regulate temperature and moisture, reducing the need for frequent watering. Once established, BloomStruck tolerates brief dry spells but performs best with steady hydration.
When and how should I fertilize BloomStruck Hydrangea?
Feed in early spring with a slow-release fertilizer (10-10-10 or 14-14-14). A light midseason feeding supports continuous blooming. For richer blue tones, use a fertilizer formulated for acid-loving plants. Avoid over-fertilization—too much nitrogen encourages leaf growth at the expense of flowers. Testing your soil’s pH will help fine-tune both color and health.
When should I prune BloomStruck Hydrangea?
Minimal pruning is required. Since it blooms on both old and new wood, prune only to remove dead or weak stems in late winter or early spring. After the first flush of flowers fades, deadhead spent blooms to encourage reblooming. Avoid hard pruning, which removes old wood and can reduce early-season blooms.
