Incrediball Smooth Hydrangea – Grow Breathtaking Blooms That Stand

ByRimon Chowdhury Updated on

Have you ever pictured your garden bursting with huge, cloud-like flowers, only to be disappointed by floppy stems that can’t hold their magnificent blooms? It’s a common frustration for many gardeners, especially with some traditional smooth hydrangeas. But what if I told you there’s a hydrangea that delivers those spectacular, oversized blossoms without the droop? One that stands proud and tall, come rain or shine?

If you’ve ever dreamt of a garden overflowing with magnificent, snowball-sized blooms, but worried about delicate stems collapsing under their own weight, then let me introduce you to the incrediball smooth hydrangea. This isn’t just another pretty face in the garden; it’s a game-changer. Imagine enjoying season after season of pristine white flowers, each one perfectly upright and ready to impress.

In this comprehensive guide, we’re going to dive deep into everything you need to know about growing and caring for this incredible plant. From planting it right to ensuring it thrives through every season, you’ll learn all the secrets to cultivating a truly show-stopping display. Get ready to transform your garden with the confidence of an expert!

Understanding the Magic of the incrediball smooth hydrangea

The ‘Incrediball’ is a cultivar of Hydrangea arborescens, commonly known as the smooth hydrangea. While its famous cousin, ‘Annabelle’, has long been a garden favorite, ‘Incrediball’ takes everything we love about smooth hydrangeas and elevates it.

What makes it so special? Its most celebrated feature is its incredibly strong stems. Unlike some older varieties that tend to flop under the weight of their massive flowers, the incrediball smooth hydrangea boasts sturdy branches that hold those impressive blooms aloft, even after a heavy rain.

These magnificent flowers start as lime-green buds in early summer, gradually expanding into enormous, pure white spheres that can reach up to 12 inches across! They truly create a dramatic impact, perfect for making a statement in any garden design.

Key Characteristics of ‘Incrediball’

  • Strong Stems: The defining feature, ensuring blooms remain upright.
  • Giant Blooms: Flowers can grow up to 12 inches in diameter.
  • Long Bloom Time: Enjoy flowers from early summer well into fall.
  • Color Transformation: Starts lime-green, turns pure white, then fades to jade green.
  • Cold Hardiness: Thrives in USDA Zones 3-9, making it incredibly versatile.
  • Deer Resistance: Generally less appealing to deer than other plants.

For gardeners looking for a reliable, show-stopping shrub, the incrediball smooth hydrangea truly lives up to its name. It’s a fantastic choice for both seasoned enthusiasts and those just starting their gardening journey.

Choosing the Perfect Spot and Planting Your Hydrangea

Finding the right location for your ‘Incrediball’ is the first step to ensuring its success. While these hydrangeas are quite adaptable, providing ideal conditions from the start will lead to healthier, more prolific plants.

Think about sunlight, soil, and space. These three elements are crucial for any plant, and the ‘Incrediball’ is no exception. Get them right, and you’re well on your way to a thriving display.

Sunlight Requirements

The ‘Incrediball’ smooth hydrangea performs best in partial shade. This means it appreciates 4-6 hours of morning sun, followed by protection from the intense afternoon heat.

In cooler climates (Zones 3-5), it can tolerate more sun, even full sun, especially if the soil remains consistently moist. However, in warmer regions (Zones 6-9), afternoon shade is crucial to prevent leaf scorch and ensure the flowers last longer.

Too much shade, conversely, can lead to fewer blooms and weaker stems. Aim for that sweet spot of morning sun and afternoon relief.

Ideal Soil Conditions

These hydrangeas prefer well-draining, fertile soil rich in organic matter. A slightly acidic to neutral pH (6.0-7.0) is generally ideal. They are quite tolerant of different soil types, but heavy clay or very sandy soils may need some amendment.

Before planting, it’s a great idea to perform a soil test. This will tell you exactly what your soil needs. If your soil is very heavy, amend it with compost, peat moss, or other organic materials to improve drainage and fertility.

Good drainage is paramount. Hydrangeas dislike “wet feet,” meaning their roots sitting in soggy soil. This can lead to root rot and other issues.

Step-by-Step Planting Guide

Once you’ve chosen your spot, it’s time to get your ‘Incrediball’ in the ground. Don’t worry—this process is straightforward!

  1. Dig the Hole: Dig a hole that is twice as wide as your plant’s root ball and just as deep. The top of the root ball should be level with the surrounding soil.
  2. Prepare the Plant: Gently remove the hydrangea from its container. If the roots are circling tightly, tease them apart slightly with your fingers or make a few vertical cuts with a clean knife. This encourages roots to spread into the new soil.
  3. Position the Plant: Place the plant in the center of the hole, ensuring the top of the root ball is even with the ground level.
  4. Backfill: Carefully backfill the hole with the excavated soil, mixed with some compost or aged manure if your soil needs enrichment. Gently tamp down the soil around the base to remove air pockets.
  5. Water Thoroughly: Water deeply immediately after planting. This helps settle the soil around the roots.
  6. Mulch: Apply a 2-3 inch layer of organic mulch (like wood chips, shredded bark, or pine needles) around the base of the plant. Keep the mulch a few inches away from the main stem to prevent rot.

Mulch is your friend! It helps retain soil moisture, regulate soil temperature, and suppress weeds. It’s a simple step that makes a big difference.

Essential Care and Maintenance for Flourishing Blooms

Once your ‘Incrediball’ is happily planted, ongoing care is relatively simple. These are low-maintenance shrubs, but a little attention goes a long way in promoting vigorous growth and an abundance of those spectacular white flowers.

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Whether you’re dealing with challenging soil or just want to ensure your plant thrives, understanding the basics of caring for your incrediball smooth hydrangea is key.

Watering Wisely

Consistent moisture is crucial, especially during the first year after planting, as your hydrangea establishes its root system. Aim for deep, infrequent watering rather than shallow, frequent sprinkles.

Check the soil moisture regularly by sticking your finger about an inch or two into the soil. If it feels dry, it’s time to water. During hot, dry spells, you might need to water more frequently, perhaps every few days.

Mature plants are more drought-tolerant but will still benefit from supplemental watering during prolonged dry periods. Drooping leaves can be a sign of thirst, but they will often perk up quickly after a good drink.

Fertilizing for Flower Power

Smooth hydrangeas are not heavy feeders. If your soil is healthy and rich in organic matter, you might not need to fertilize at all. However, if your plant seems to be struggling or producing fewer blooms, a light application of fertilizer can help.

Apply a balanced, slow-release granular fertilizer in early spring, just as new growth begins. Look for a formula with an NPK ratio like 10-10-10 or one specifically formulated for flowering shrubs. Always follow the product instructions carefully to avoid over-fertilizing, which can burn the roots.

Avoid fertilizing late in the season (after mid-summer) as this can stimulate new growth that won’t harden off before winter, making it susceptible to cold damage.

Pest and Disease Watch

The ‘Incrediball’ is generally a robust and disease-resistant plant. However, like all garden plants, it can occasionally encounter issues. Stay vigilant and inspect your plants regularly.

  • Aphids: Small, soft-bodied insects that cluster on new growth. A strong spray of water can often dislodge them.
  • Leaf Spot: Fungal disease causing spots on leaves. Ensure good air circulation and avoid overhead watering to minimize risk.
  • Powdery Mildew: White, powdery coating on leaves, often in humid conditions with poor air circulation.

Most issues are minor and can be addressed with simple organic solutions. For persistent problems, consider consulting a local garden center or extension office for tailored advice.

Pruning Your incrediball smooth hydrangea for Maximum Impact

Proper pruning is essential for encouraging vigorous growth and those impressive flowers on your incrediball smooth hydrangea. Unlike bigleaf hydrangeas (Hydrangea macrophylla) which bloom on old wood, smooth hydrangeas like ‘Incrediball’ bloom on new wood.

This means you can prune them quite aggressively without sacrificing the current season’s flowers. In fact, a good prune encourages stronger stems and larger blooms.

When to Prune

The best time to prune your ‘Incrediball’ is in late winter or early spring, before new growth begins to emerge. This gives the plant plenty of time to produce strong new stems that will bear flowers in the summer.

You can also deadhead spent flowers throughout the blooming season to maintain a tidy appearance, but this isn’t strictly necessary for reblooming, as the plant will continue to produce new buds regardless.

How to Prune

There are a few approaches to pruning, depending on your desired outcome:

  • Hard Pruning (for maximum bloom size): Cut all stems back to about 6-12 inches from the ground. This encourages fewer, but very large, flowers on incredibly strong new growth. This is a popular method for ‘Incrediball’.
  • Light Pruning (for more, slightly smaller blooms): Remove only weak, damaged, or crossing branches. You can also cut back stems by about one-third to one-half their length. This results in more flowers, but they may be slightly smaller than those from hard-pruned plants.
  • Maintenance Pruning: Throughout the year, remove any dead, diseased, or damaged branches as soon as you notice them. This keeps the plant healthy and prevents the spread of potential issues.

Always use clean, sharp pruning shears to make clean cuts. This minimizes stress on the plant and reduces the risk of disease. Don’t be afraid to prune! These hydrangeas are incredibly forgiving.

Winterizing and Protecting Your ‘Incrediball’

Given their excellent cold hardiness (USDA Zones 3-9), ‘Incrediball’ hydrangeas are quite resilient to winter conditions. However, a little preparation can go a long way, especially for younger plants or those in the colder end of their hardiness range.

Most established plants will sail through winter with minimal fuss. Your main goal is to protect the root zone and any new, tender growth that might be vulnerable to late frosts.

Late Fall Preparation

As fall progresses and temperatures drop, your ‘Incrediball’ will naturally begin to go dormant. The leaves may turn yellow or brown and eventually drop. Resist the urge to prune at this time, as any new growth stimulated by pruning won’t have time to harden off before the deep cold sets in.

Ensure the plant is well-watered going into winter, especially if your fall has been dry. This is crucial for evergreen plants, but also beneficial for deciduous shrubs like hydrangeas.

Winter Protection Steps

  1. Mulch Heavily: Apply an additional 4-6 inch layer of organic mulch around the base of the plant in late fall, after the ground has started to freeze. This extra layer insulates the roots from extreme temperature fluctuations.
  2. Consider a Cage (for young plants): In very cold zones, or for newly planted specimens, you can construct a wire cage around the plant and fill it with straw or leaves. This provides extra insulation for the above-ground stems.
  3. Avoid Early Pruning: As mentioned, save your major pruning for late winter or early spring. Leaving the spent flower heads on through winter can actually provide a bit of extra protection for the dormant buds.

Once spring arrives and the threat of hard frost has passed, you can remove any extra winter protection and proceed with your spring pruning. You’ll be amazed at how quickly new growth emerges!

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Designing with ‘Incrediball’: Landscaping Ideas

The impressive size and upright habit of the ‘Incrediball’ smooth hydrangea make it an incredibly versatile plant for various landscape designs. Its pure white blooms provide a stunning contrast against green foliage and can brighten up any garden space.

Whether you’re looking for a dramatic focal point or a subtle backdrop, ‘Incrediball’ can fit the bill. Let’s explore some popular ways to incorporate this beauty into your garden.

Mass Plantings and Borders

One of the most impactful ways to use ‘Incrediball’ is in mass plantings. Planting several together creates a magnificent hedge or a breathtaking border that truly stops traffic. The uniform size and upright flowers create a cohesive, elegant look.

They also pair wonderfully with other plants. Consider planting them alongside evergreens for year-round structure, or with colorful perennials like coneflowers, hostas, or astilbes for a vibrant display.

Foundation Plantings

Because of their manageable size (typically 4-5 feet tall and wide) and reliable performance, ‘Incrediball’ hydrangeas are excellent choices for foundation plantings around your home. They provide a soft, welcoming look without overwhelming the architecture.

Their strong stems ensure they won’t flop onto walkways or obscure windows, making them a practical and beautiful option for these key areas.

Container Gardening

Yes, you can grow ‘Incrediball’ in large containers! This is a fantastic option for patios, balconies, or for those who want to bring their hydrangeas closer to their outdoor living spaces. Choose a container that is at least 18-24 inches in diameter to give the roots plenty of room.

Container-grown hydrangeas will require more frequent watering and feeding than those in the ground, as their soil tends to dry out faster. In colder climates, container plants may need extra winter protection, such as moving the pot into an unheated garage or wrapping it with burlap.

Cutting Garden Star

Those enormous, long-lasting blooms are perfect for cutting and bringing indoors. They make stunning fresh arrangements and can also be dried for everlasting beauty. Cut stems in the morning after the dew has dried, and immediately place them in water.

To dry the blooms, cut them when they are fully open but still firm, then hang them upside down in a cool, dark, well-ventilated area. They’ll retain much of their beauty for months!

Frequently Asked Questions About incrediball smooth hydrangea

Even with all this information, a few common questions often pop up. Let’s tackle them to ensure you feel completely confident growing your ‘Incrediball’.

Why aren’t my ‘Incrediball’ hydrangeas blooming?

Lack of blooms is usually due to insufficient sunlight, improper pruning, or inadequate nutrition. Ensure your plant gets at least 4-6 hours of sun, prune in late winter/early spring (not fall), and consider a balanced fertilizer if soil is poor. Extreme stress from drought or too much competition can also suppress flowering.

Do ‘Incrediball’ hydrangeas change color?

Unlike bigleaf hydrangeas (Hydrangea macrophylla) whose flower color can change with soil pH, ‘Incrediball’ smooth hydrangeas (Hydrangea arborescens) will always produce white flowers. They typically emerge lime-green, mature to pure white, and then fade back to a jade green or even a subtle pinkish hue as they age.

Are ‘Incrediball’ hydrangeas deer resistant?

Yes, ‘Incrediball’ is generally considered more deer resistant than many other garden plants, including other types of hydrangeas. While no plant is 100% deer-proof, deer tend to prefer other options. However, if deer pressure is very high and food sources are scarce, they might sample your hydrangea.

Can I grow ‘Incrediball’ in full sun?

In cooler climates (USDA Zones 3-5), ‘Incrediball’ can often tolerate full sun, especially if the soil is consistently moist. In warmer climates (Zones 6-9), full sun, particularly intense afternoon sun, can lead to leaf scorch and wilting. Partial shade, especially afternoon shade, is always preferred for optimal performance and longer-lasting blooms.

When is the best time to move an established ‘Incrediball’ hydrangea?

The best time to transplant an established ‘Incrediball’ is during its dormant period, either in late fall after the leaves have dropped or in early spring before new growth emerges. This minimizes stress on the plant. Be sure to dig a wide root ball and keep it well-watered after transplanting.

Conclusion: Embrace the Beauty of ‘Incrediball’

The incrediball smooth hydrangea truly is a garden marvel. With its robust, upright stems, enormous white blooms, and remarkable hardiness, it solves many of the common frustrations associated with traditional smooth hydrangeas.

By following the simple, expert advice laid out in this guide, you’re now equipped with all the knowledge you need to cultivate these magnificent plants successfully. From choosing the perfect spot to mastering the art of pruning, you’re ready to create a stunning display that will be the envy of your neighborhood.

Don’t let past gardening woes deter you. Embrace the confidence that comes with understanding your plants, and watch your garden flourish. Go forth and grow your own breathtaking ‘Incrediball’ hydrangeas – your garden (and your neighbors!) will thank you!

Rimon Chowdhury
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