Shrubs
Hydrangea macrophylla 'PIIHM-II'
BloomStruck® bigleaf hydrangea
Rounded pink or blue-purple flower heads stand above dark green leaves and red-purple stems. This reblooming selection brings repeated summer color to mixed borders and foundation beds. The flower color depends on soil conditions, while its sturdy stems help support the display.
At a glance
- Sun
- Morning sun; afternoon shade
- Mature size
- 3–4 ft. tall × 4–5 ft. wide
- Water
- Even moisture in well-drained soil
- Hardiness
- USDA zones 4–9
- Bloom
- Early summer into fall; repeat bloom varies with conditions.
Sizes & prices
- #2$44.99
- #5Endless Summer's newest Heavy bloomer, Blue$49.99
Catalog updated September 8, 2026. This is not a live stock count; please call to confirm availability and price.
Ask about this plantSelect a section to expand.
Resistance & tolerances
- Deer
- Susceptible to browsing; protect where deer are active.
Resistance is not a guarantee; deer and rabbits may browse any plant.
Seasonal interest
- Foliage
- Deciduous.
Growing & care
- Pruning
- Avoid routine cutting back or fall pruning. Remove winter-killed stems after new leaves reveal live growth.
- Flowering wood
- Old and new growth.
- Flower color
- Affected by soil acidity and available aluminum.
Sources & photo credits
Photo: Michele Dorsey Walfred · CC BY 2.0
Image notes: BloomStruck® bigleaf hydrangea. Representative plant; resized and re-encoded, not cropped.
Reviewed September 21, 2026. Growing conditions vary by location.