Best Pink Smooth Hydrangea: Invincibelle Spirit II

When most folks hear the words smooth hydrangea, they immediately picture the classic Annabelle hydrangea with those big, round, white flower heads. Annabelle has been a dependable garden favorite for generations, and for good reason. It’s cold-hardy, easy to grow and blooms on new wood, which makes pruning a whole lot less confusing.

But what if you love everything about an Annabelle hydrangea and wish you could get those same dependable blooms in pink?

That’s where Invincibelle® Spirit II smooth hydrangea comes in.

This beautiful shrub gives you the reliable nature of an Annabelle-style hydrangea, but instead of white blooms, it produces rich pink flowers on stronger stems. It’s a great choice for gardeners who want something familiar, dependable and just a little different.

What Is a Smooth Hydrangea?

Smooth hydrangeas are part of the species Hydrangea arborescens. They’re deciduous flowering shrubs native to the eastern United States and are known for being adaptable, cold-hardy and relatively easy to maintain.

The classic Annabelle is probably the best-known smooth hydrangea, but newer varieties have brought stronger stems, improved flower production and several new bloom colors into the group.

One of the biggest advantages of smooth hydrangeas is that they bloom on new wood.

That means the flower buds develop on the fresh growth produced during the current growing season. Even when winter damages the old stems, the plant can still grow new branches and produce flowers that summer.

For gardeners who worry about accidentally pruning off their hydrangea blooms, smooth hydrangeas are one of the easiest types to manage.

Meet Invincibelle Spirit II

Invincibelle Spirit II is sometimes described as a pink Annabelle-type hydrangea. It was developed as an improved version of the original Invincibelle Spirit, which introduced pink flowers to this dependable group of smooth hydrangeas.

The newer Spirit II version offers several improvements, including:

• Deeper, richer pink flowers
• Darker green foliage
• Stronger, sturdier stems
• Larger flower heads
• Improved reblooming
• Flowers that age to an attractive green

Those stronger stems are especially important.

Traditional Annabelle hydrangeas can sometimes flop after a heavy summer rain, especially when those large flower heads become filled with water. Invincibelle Spirit II was selected for stiffer stems that do a better job of holding the blooms upright.

The Pink Blooms Are the Real Showstopper

The flowers begin with dark pink buds that open into bright, vivid pink blooms. As the flowers mature, the color softens before eventually aging to green.

And here’s something important to understand: the pink color isn’t controlled by the soil’s pH.

Unlike some bigleaf hydrangeas that can change between blue and pink depending on the soil, Invincibelle Spirit II is naturally pink. Adding lime, sulfur or other soil treatments isn’t going to turn it blue.

Personally, I think that makes things easier. You know what color you’re planting, and you don’t have to keep trying to adjust the soil to hold that color.

Does Invincibelle Spirit II Rebloom?

Yes, and that’s another reason this hydrangea stands out.

After the first flush of flowers, the plant can continue producing waves of fresh blooms from summer into fall. Under good growing conditions, it may continue flowering until frost.

You don’t have to deadhead it to make it survive, but removing older blooms can help keep the shrub looking neat and may encourage you to notice the fresh flowers coming behind them.

You can also leave some of the aging green flower heads on the plant for fall interest or cut them for dried arrangements.

Invincibelle Spirit II Plant Details

Plant Type: Deciduous flowering shrub
Hydrangea Type: Smooth hydrangea
Botanical Name: Hydrangea arborescens
Bloom Color: Deep pink, aging to green
Bloom Time: Summer through fall
Mature Height: Approximately 3½ to 4 feet
Mature Width: Approximately 3½ to 4 feet
Hardiness Zones: USDA Zones 3–8
Sun Exposure: Part sun to full sun
Blooms On: New wood
Care Level: Easy to moderate

Its rounded size makes it easy to use in foundation beds, mixed shrub borders, cottage gardens and cutting gardens.

Invincibelle Spirit II vs. Annabelle Hydrangea

Annabelle is still a beautiful plant, and there’s nothing wrong with growing one. But Invincibelle Spirit II offers a few features that may appeal to today’s gardener.

Flower Color

Annabelle produces large white flower heads that usually age to green.

Invincibelle Spirit II produces deep pink flowers that soften with age before turning green.

Stem Strength

Annabelle’s large flowers can sometimes pull its stems toward the ground after heavy rainfall.

Invincibelle Spirit II has stronger, stiffer stems designed to hold its flowers more upright.

Blooming Habit

Both plants bloom on new wood, but Invincibelle Spirit II was developed to rebloom and produce new flowers through the season.

Overall Appearance

Annabelle gives you that traditional white farmhouse-garden look.

Invincibelle Spirit II gives you a similar rounded, dependable hydrangea with a much bolder splash of pink.

I wouldn’t necessarily say one makes the other obsolete. It comes down to the color and look you want in your yard. But when you want the easy nature of an Annabelle with stronger stems and pink flowers, Spirit II deserves a serious look.

Where Should You Plant It?

Choose a location that receives morning sun and some protection from the hottest afternoon sun, especially here in the South.

Smooth hydrangeas can tolerate a fair amount of sunlight, but strong afternoon heat can cause the leaves and flowers to wilt. A spot with four to six hours of sun, followed by afternoon shade, is often a good balance.

Give the shrub enough space to reach roughly four feet tall and wide without being crowded by nearby plants.

Good air circulation helps reduce disease problems, so don’t squeeze it tightly against a wall or between larger shrubs.

Soil and Planting Tips

Invincibelle Spirit II grows best in soil that is:

• Moist but well drained
• Enriched with organic matter
• Loose enough for the roots to spread
• Mulched to help retain moisture

Dig your planting hole about twice as wide as the root ball but no deeper than the root ball itself.

Place the hydrangea so the top of the root ball sits level with, or just slightly above, the surrounding soil. Planting too deeply can slow growth and create root problems.

Backfill with the soil you removed, water it thoroughly and apply two to three inches of mulch around the root zone.

Keep the mulch a few inches away from the main stems. Piling mulch directly against the plant can trap moisture and encourage rot.

Watering Invincibelle Spirit II

Smooth hydrangeas appreciate consistent moisture, especially while they’re becoming established.

During the first growing season, check the soil regularly and water deeply when the top inch or two begins to feel dry.

A slow, thorough watering is better than a quick splash every day. Deep watering encourages the roots to grow farther into the surrounding soil.

Once established, the plant is fairly adaptable, but it may still need extra water during long stretches of hot, dry weather.

Don’t panic every time it wilts on a hot afternoon. Hydrangeas sometimes wilt temporarily during intense heat even when the soil contains moisture. Check the soil before watering again so you don’t accidentally keep the roots soaked.

How to Prune Invincibelle Spirit II

Because Invincibelle Spirit II blooms on new wood, pruning is simple.

Prune it in late winter or early spring before strong new growth begins. Smooth hydrangeas can be cut back to encourage fresh stems and a rounded shape.

You can remove:

• Dead or damaged branches
• Weak, thin stems
• Branches growing toward the center
• Older flower heads left from the previous season

You don’t have to cut the shrub all the way to the ground every year.

Leaving a sturdy framework of older stems may help support the new growth. A light to moderate pruning is usually enough unless the plant needs rejuvenation.

Fertilizing Smooth Hydrangeas

Invincibelle Spirit II generally doesn’t need heavy feeding.

Apply a slow-release fertilizer formulated for flowering shrubs in early spring as new growth begins. Follow the directions on the package and avoid using more than the recommended amount.

Too much nitrogen can produce a lot of green growth without improving flowering. It can also create softer stems that are more likely to bend.

A layer of compost around the root zone can also improve the soil without pushing excessive growth.

Common Problems to Watch For

Smooth hydrangeas are usually dependable, but they can still experience a few problems.

Wilting

Wilting may be caused by dry soil, intense afternoon heat or roots that haven’t fully established.

Check the soil before adding more water.

Leaf Spots

Leaf spots may develop when the foliage stays wet for long periods.

Water near the base of the plant instead of spraying the leaves, and provide enough spacing for air circulation.

Powdery Mildew

Powdery mildew can appear as a pale or white coating on the leaves. Improving airflow and avoiding overhead watering can help reduce it.

Aphids

Aphids may gather on tender new growth. A strong stream of water is often enough to knock off a small population.

Is Invincibelle Spirit II Right for Your Yard?

Invincibelle Spirit II is worth considering when you want:

• A dependable hydrangea that blooms on new wood
• Pink flowers that don’t depend on soil pH
• A medium-sized shrub for a foundation or flower bed
• Stronger stems than a traditional Annabelle
• Flowers from summer into fall
• A hydrangea that works well as a cut flower

It’s especially useful for gardeners who love the rounded blooms of Annabelle but want something besides white.

Final Thoughts

Annabelle hydrangeas helped make smooth hydrangeas garden favorites, but today’s improved varieties give us even more choices.

Invincibelle Spirit II keeps the dependable blooming habit and easy pruning of an Annabelle-style hydrangea while adding stronger stems, darker foliage, reblooming flowers and that beautiful pink color.

For me, that pink is what really makes it stand out.

It’s familiar enough to fit into a traditional Southern flower bed, but different enough to make folks stop and ask, “What kind of hydrangea is that?”

And honestly, those are some of the most enjoyable plants to grow.

Visit our Hydrangea Help page for more Hydrangea tips