Endless Summer® BloomStruck® Bigleaf Hydrangea

Hydrangea macrophylla 'PIIHM-II'

Endless Summer®

BloomStruck Hydrangea Blooms on Old and New Wood for Non-Stop Color Spring Through Fall
Cold Hardy: Thrives in Zones 4-9
Grows 3-4 ft Tall, 4-5 ft Wide
Showy Blue, Pink Blooms From Early Summer to Early Fall
Excellent Privacy Screen or Hedge

$23⁴⁹

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Plant Size

Quart Container #2 Container #3 Container

Product variants

Planting & Care

Where to Plant

Sunlight: Provide 4 to 6 hours of morning sun followed by dappled afternoon shade. Too much direct afternoon sun can scorch the leaves and cause the blooms to fade prematurely.
Soil: Use rich, well-drained soil amended with organic matter like compost. If you have heavy clay, plant your hydrangea in a slightly raised mound to ensure water drains away from the crown and roots.

Watering Requirements

During the first two years of establishment, check the soil daily and provide a deep soak whenever the top inch feels dry. Mature plants need consistent moisture to support their large leaves, so provide roughly one inch of water per week through supplemental irrigation if rain is scarce. Inconsistent watering often leads to wilting and smaller flower heads because the plant cannot transport nutrients efficiently.

Pruning Tips

This variety is unique because it blooms on both old wood from last year and new growth from the current season. Only prune in the early spring once you see green buds beginning to swell, cutting back only the stems that show no signs of life. Think of this like a light spring cleaning to remove winter damage, as over-pruning will remove the flower buds that are already set and ready to pop.

Fertilizer Needs

Apply a balanced, slow-release fertilizer specifically labeled for flowering shrubs in early spring as new leaves emerge. Avoid using high-nitrogen fertilizers after July because they stimulate soft, leafy growth that will not have time to harden off before the first frost. This late-season surge of growth makes the plant vulnerable to winter die-back and can reduce the following year's bloom count.

Delivery and Shipping

Shipping Rates

Ships in 7-10 business days • Tracking provided • Weather protected

Under $50	$9.99
$50 - $99.99	$14.99
$100 - $149.99	$16.99
$150 - $198.99	$24.99
$199+	FREE

✓ Zone-specific timing • ✓ Professional packaging • ✓ Health guarantee

Understanding Our Container Sizes

At Nature Hills, our plants are sold in industry-standard nursery containers. You will notice we use the word "container" rather than "gallon." Container numbers follow a nursery trade size standard, not liquid volume. The number tells you the plant's size category and general maturity level. A larger container means a more established plant with a stronger root system.

Container Sizes

Quart

Plant age: 6 months to 1 year
Best for: Ground covers, perennials, ornamental grasses
What to expect: Our smallest and most affordable size. Well-suited for planting in multiples across a large area. Allow 1 to 2 seasons for full establishment.

#1 Container

Plant age: 1 to 2 years
Best for: Shrubs, perennials, smaller trees
What to expect: About the size of a large coffee can. A well-developed root system in a manageable size. Good value choice when you have time to let the plant grow into the space over a season or two.

#2 Container

Plant age: 2 to 3 years
Best for: Shrubs and trees where you want faster establishment
What to expect: A noticeable step up from a #1 in both plant size and root development. Good choice when you want visible presence without going to a larger size.

#3 Container

Plant age: 3 to 4 years
Best for: Most plants, most situations — flowering trees, shade trees, evergreen shrubs
What to expect: Our most popular size. Strong, developed root system. Plants in a #3 container make an immediate visual impact from day one. If you want a head start rather than waiting seasons for a plant to fill in, this is typically the right choice.

#5 Container and Larger

Plant age: 4 to 5+ years
Best for: Specimen plants, privacy screens, maximum instant impact
What to expect: Large, mature plants ready to make an immediate statement in your landscape. We also carry #7 and larger sizes for select varieties.

Why "Container" and Not "Gallon"?

Nursery container sizes follow an industry trade standard established for the nursery and horticulture industry. The number is a size designation, not a measurement of liquid volume. Actual soil volume varies by plant type, root mass, and growing medium. Using "container" is the accurate industry term. When you see #1, #2, or #3, think of it as the plant's size tier, not a gallon measurement.

Root Pouch Containers

Some Nature Hills plants arrive in a Root Pouch, a breathable fabric container made from 100% recycled materials. Root Pouches encourage denser root development through air pruning, which discourages root circling and promotes a stronger, more fibrous root ball at the time of planting.

Plants growing in Root Pouch fabric containers, showing the breathable woven fabric construction

There are two types. Knowing which one you have changes how you plant:

Degradable (brown or tan fabric): Plant the entire pouch directly in the ground. The fabric breaks down naturally in the soil over time.
Non-degradable (black or gray fabric): Remove the pouch before planting. Cut the bottom open with scissors, then peel the sides away. The fibrous root ball will hold its shape.

Not sure which type you have? Check the tag on your plant or contact us and we will confirm.

Full Root Pouch planting guide

Choosing the Right Size

Size	Plant Age	Best For
Quart	6 mo to 1 yr	Ground covers, perennials, grasses. Budget-friendly for mass plantings.
#1 Container	1 to 2 yrs	Shrubs, perennials, small trees. Value choice for patient gardeners.
#2 Container	2 to 3 yrs	Shrubs and trees where you want faster establishment.
#3 Container	3 to 4 yrs	Most plants. Immediate visual impact. Our most popular size.
#5 and larger	4+ yrs	Specimen plants, privacy screens, maximum instant impact.

Still not sure which size is right for your project? Our plant specialists are happy to help. Contact us and we will point you in the right direction.

Plant specifications
Plant Characteristics	Cold hardy, Flowering, Reblooming, Disease resistant, Attracts pollinators, Container Friendly
Hardiness Zone	6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b, 10a, 10b, 11a, 11b
Sunlight	Partial shade
Height	3-4 ft
Width	4-5 ft
Watering Needs	Moderate
Preferred Soil	Clay, Loamy, Peaty, Sandy
Growth Rate	Fast
Growth Habit	Bushy, Upright
Blooms In	Fall, Summer
Flower Color	Blue, Pink
Foliage Color	Green, Red, Purple
Pet Safety	Toxic to pets
Suitable Space	Indoors, Outdoors
Plant Name	Hydrangea
Botanical Name	Hydrangea macrophylla 'PIIHM-II'
Species	macrophylla
Cultivar	PIIHM-II
Class	Magnoliopsida, Cornales
Does Not Ship To	AK, HI, ID, MT, PR

Gorgeous Endless Summer® BloomStruck® Hydrangea

Ombre Range of Bloom Colors
Flowers in the Shade
Disease Resistance
Compact Habit
Flower Buds Emerge in Early Spring
Blooms on Last Year's Wood and New Growth
Reblooms All Summer Long
Dark Green Leaves
Unique Contrasting Red Stems
Super Hardy and Super Easy
Flower Color Depends on Your Soil pH
Lime for Pink Flowers - Sulphur for Blue Flowers

Decorate your summer by simply adding the Endless Summer® BloomStruck® Hydrangea PP 25,566 (Hydrangea macrophylla 'PIIHM-II') to your landscape. It blooms from late spring all the way into fall! And what blooms!

These are majestic, large, and elegant mophead blooms and they shine in a range of jewel tones from rich, clear pink to glorious purple to royal blue. Sometimes, you'll get the full range on one plant!

It's quite simple to select the color you prefer. With a simple soil amendment, you can change the color of your Endless Summer® BloomStruck® Hydrangea to match your style.

If you've never tried the world-famous Endless Summer® line, BloomStruck® is a great plant to start with. This variety represents a big improvement over the Hydrangeas of old. It was made a home garden favorite, standing head and shoulders above other varieties.

Why? Well, most Hydrangeas bloom on old or last year's wood and that's all she wrote. But BloomStruck® blooms on both old wood left standing from last season, then it follows up with beautiful flowers on new growth emerging from the ground.

You'll enjoy an endless progression of flowers produced through the summertime. Let BloomStruck® dazzle you with its intense display of light blues, pinks and dark purple blooms. The plants seem to change daily and there is always something to notice. You might think this plant was grown just to entertain you and your guests!

Our expert growers love these hardy, disease-resistant plants. The wonderful dark green foliage is arrow-shaped. The leaves are borne on purple-red stems and feature red petioles and red veins. Sounds exciting, right? They make a fabulous contrast to the large blooms.

Don't go another year without at least one in your landscape. You'll like them so much, that you'll be back to splash out on a big display. You'll never regret this incredible choice. Order yours today from the Hydrangea lovers at Nature Hills.

How to Use Endless Summer® BloomStruck® Hydrangea

BloomStruck®'s enormous pom-pom-shaped mophead blooms are professional florist-grade quality. Start your vase collection now, as you'll be able to bring armloads indoors to place all over your tablescapes.

One will fill a simple table vase. Five blooms placed in a shallow bowl look like you spent a fortune at a Beverly Hills florist!

At only 3 to 4 feet tall, this plant can go anywhere in the landscape that gets afternoon shade. Use a long row of them on the east side of your property, or nearby taller evergreen trees.

For a compact low hedge, plant 3 feet apart on center. Measure from the center of one to the center of the next.

Bring out the BloomStruck® Hydrangeas wonderful display of color with a few simple guidelines. First, use a Soil Testing kit to determine the pH of your soil. Anything below 7 is considered acidic.

For the best shade of blues and purples, the soil pH should be between 5.5 to 5.8. Adjust your soils using Aluminum Sulphate, following the directions on the package until you achieve the desired pH over time. Add garden lime to warm up the tones to a lovely clear pink.

Please be patient. It may take a season or two to get things exactly right. Adjusting the pH can have a dramatic effect on the color and overall display, so don't be afraid to experiment.

Decide if you want vivid rose pink, deep luscious purple, brilliant blue or everything in between, on the BloomStruck® Hydrangea. Change them every year, if you so desire.

Leave the last blooms of the season standing on the plant for interest during the winter months. They'll dry on the shrub and offer winter protection. The dried blooms will give you something great to look at until things start heating up again for spring. You can always snip these blooms as dried decorations indoors too!

#ProPlantTips for Care

Plant in a location with moist soils that are well-drained and rich in organic matter. BloomStruck® won't tolerate standing water. If needed, simply raise your planting to 12 to 18 inches above the soil line to improve oxygen to the root.

Hydrangeas really benefit from being mulched well. Apply at least 3 to 4 inches of mulch spread out 3 feet from the outside of the canopy. Apply Dr. Earth Acid Lovers Acid Fertilizer to maintain the soil biology and help sustain your pH for those pretty blue blooms.

This is a beautiful compact selection and only needs a limited amount of maintenance. In the first few years, only cosmetic pruning to remove winter-damaged stems is needed to shape the plant.

After the 3rd year, remove the twiggy growth and remove a portion of the older growth to make room for new shoots. These can be removed to the ground or cut back to a point in the spring.

With extra-strong stems, above-average heat tolerance, and great disease and powdery mildew resistance, BloomStruck® is an outstanding garden plant.

The one-two punch of beauty and hardiness make the Endless Summer® BloomStruck® Hydrangea one you don't want to miss. Order one or more for your garden this year from NatureHills.com!

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Frequently Asked Questions

Does BloomStruck Hydrangea bloom on both old and new wood?

Yes, BloomStruck Hydrangea blooms on both old wood from last season and new growth that emerges from the ground. This dual blooming habit ensures continuous flowers from late spring through fall, unlike traditional hydrangeas that only bloom on old wood. You'll see the first flush on overwintered stems, followed by repeat blooms on current year's growth.

What are the sunlight requirements for Endless Summer BloomStruck Hydrangea?

BloomStruck Hydrangea thrives in partial shade and can even bloom in shadier conditions than most hydrangeas. This variety tolerates morning sun with afternoon shade beautifully. Plant where it gets 4-6 hours of sunlight daily for best blooms, available at naturehills.com.

How do I care for BloomStruck Hydrangea, including watering and fertilizing?

Water regularly but ensure good drainage, as BloomStruck hydrangeas prefer consistently moist soil. Fertilize in early spring with a balanced fertilizer when flower buds emerge. Apply lime for pink blooms or sulfur for blue flowers to adjust soil pH and achieve your desired color.

What are the shipping options or seasons for ordering BloomStruck Hydrangea online?

BloomStruck Hydrangeas are typically available for spring and fall planting seasons when shipped bareroot or potted. Since flower buds emerge in early spring, fall planting gives the best establishment time. Order early in your preferred season for the widest selection and optimal planting timing.

Is BloomStruck more heat-tolerant than other bigleaf hydrangeas?

BloomStruck hydrangeas offer improved heat tolerance compared to traditional bigleaf varieties, thriving in both sun and shade conditions. Their disease resistance and ability to bloom on both old and new wood makes them more resilient overall. Shop at Nature Hills for this hardy, reblooming variety.

What soil pH determines the flower color (blue or pink/purple) on BloomStruck?

Acidic soil (pH below 7) produces blue flowers, while alkaline soil (pH above 7) creates pink and purple blooms on BloomStruck hydrangeas. Add sulfur to lower pH for blue flowers, or add lime to raise pH for pink tones.

Is my planting zone suitable for BloomStruck, like Zone for New Orleans, LA?

BloomStruck hydrangeas are hardy in USDA zones 4-9, so they'll thrive in New Orleans' zone 9b climate. The super hardy nature of this variety means it can handle your hot, humid summers while still producing continuous blooms. Plant in morning sun with afternoon shade to protect from intense heat.