Light Needs
Mature Height
Mature Spread
Growing Zones
Incrediball Storm Proof™ Smooth Hydrangea (Hydrangea arborescens 'SMNHAGOV') bears huge, white globe-shaped blooms that stay upright in even the heaviest downpours. We've found its sturdy stems truly live up to the “storm proof” name. Its abundant flowers begin in mid-summer and remain eye-catching for weeks, whether you enjoy them fresh or as cut and dried arrangements. Its compact form, about 3 to 4 feet tall and wide, fits neatly into smaller landscapes or containers.
Beyond its graceful blooms, Incrediball Storm Proof™ features a denser, rounder habit than many similar hydrangeas. This North American native is known for being pollinator-friendly, welcoming visiting bees and butterflies to its large, nectar-rich flower heads. Its upright nature also makes it suitable for mixed borders, foundation plantings, and massing in larger beds. Low-maintenance needs make it an ideal choice for busy gardeners seeking dependable summer color.
Incrediball Storm Proof™ Smooth Hydrangea Care
Place it where it can receive partial to full sun, though afternoon shade helps in hotter climates. Provide a rich, well-draining soil with a pH between 6.0 and 7.0, adding compost or other organic matter at planting time. Water thoroughly two or three times weekly while it establishes, particularly if it’s in a sunnier spot. A slow-release, balanced fertilizer in early spring supports healthy stems and steady blooms.
Trim it back by about one-third in late winter or early spring, cutting just above a strong set of buds. This keeps stems sturdy and removes any dead growth. In colder regions, apply mulch around the base for added root protection, and remove any leaf litter to discourage potential fungal issues. Potted specimens thrive in a good-quality potting mix, needing consistent watering and occasional pruning for shape.
Incrediball Storm Proof™ Smooth Hydrangea Spacing
Set individual plants 3 to 4 feet apart if you prefer a tidy border or small hedge. Give them slightly more room in larger mass plantings to accommodate mature width and easy access for pruning. A container at least 12 to 16 inches wide allows room for root growth and supports its naturally rounded silhouette.
Compare Incrediball® Hydrangeas
Compare flower color, mature size, and the features that set each Incrediball® hydrangea apart.
Incrediball Storm Proof Smooth Hydrangea Plant Facts
Growing Conditions
- Hardiness ZonesGrowing Zones
- USDA Zones 3 to 9 (perennial); grown as an annual elsewhere (outdoors year-round); grown indoors elsewhere (outdoors year-round); grown in containers elsewhere (grown as a seasonal crop)
- Sun Exposure
- Part Shade to Part Sun (3-6 Hours Direct Sun)
- Mature Height
- 3-4 Feet
- Mature Spread
- 4-5 Feet
- Growth Habit
- , Mounded
- Water Needs
- Consistently Moist
Flowers & Foliage
- Flower Colors
- , White
- Flower Description
- Creamy white ages to soft green
- Bloom Time
- Summer
- Blooms On
-
New Wood
?
"Blooms on" tells you which stems produce flowers, which decides when it's safe to prune.
- New Wood: Flowers form on stems that grow this season. Prune in late winter or early spring without losing blooms.
- Old Wood: Flower buds form on last year's stems. Prune right after flowering. Pruning in fall or early spring removes next year's blooms.
- Both New and Old Wood: Blooms on last year's stems and again on new growth, so it flowers even after a hard winter or a mistimed pruning. Prune lightly after the first flush of blooms.
- When to Prune
- Late winter to early spring, before new growth starts
- Foliage Color
- , Green
- Foliage Description
- Dark green
- Foliage Type
- , Deciduous
- Seasonal Interest
- , Spring Flowering, Summer Flowering, Fall Flowering, 3 Season Interest
Garden Benefits
Plant Overview
- Common Name
- Incrediball Storm Proof Smooth Hydrangea
- Also Known As
- Incrediball Storm Proof
- Botanical Name
- Hydrangea arborescens 'Incrediball Storm Proof'
- Brand
- Proven Winners
Simple Plant Spacing Calculator
Please Note: The pictures below are to give a general representation of the different container sizes. The actual size/ages of plants are estimates and will vary based on type of plant, time of year, last pruning & many other factors.
Also Known As:
Quart
Plant Age:
~ 6 months - 1 year
Plant Size:
~ 4"-8"
Pot Size:
~ 4.75"H x 4.5"W
Volume:
1.50 quarts
Also Known As:
2.5 Quart Pot
Plant Age:
~ 1 - 2 years old
Plant Size:
~ 8"-12"
Pot Size:
~ 6.5"H x 6.5"W
Volume:
2.20-2.30 quarts
Also Known As:
#1 Container
1 Gallon
Plant Age:
~ 1 - 2 years old
Plant Size:
~ 10"-14"
Pot Size:
~ 7"H x 7.75"W
Volume:
2.26-3.73 quarts
Also Known As:
#2 Container
2 Gallon
Plant Age:
~ 1.5 - 3 years old
Plant Size:
~ 12"-18"
Pot Size:
~ 9.5"H x 9.5"W
Volume:
1.19-1.76 gallons
Also Known As:
#3 Container
3 Gallon
Plant Age:
~ 2 - 4 years old
Plant Size:
~ 12"-30"
Pot Size:
~9.5"H x 11"W
Volume:
2.32-2.76 gallons
Also Known As:
#5 Container
5 Gallon
Plant Age:
~3-4 years old
Plant Size:
~ 20" - 60"
Pot Size:
~11" H x 10 1/2” W
Volume:
3.5 - 4 gallons
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We want your plants to arrive in great condition! If you notice any issues upon delivery, contact us within 3 days.
Starting January 1, 2026 all bushes, perennials & trees purchased come with an extended 1-year warranty for added confidence. If your plant dies due to a health issue within a year, we’ll make it right.
Plants that are currently in stock typically ship within 2-7 business days after your order is placed.
Plant Addicts ships to the lower 48 states within the U.S. Unfortunately, we do not currently ship to Alaska, Hawaii, or internationally.
This plant cannot be shipped to the following states: AK, HI. These restrictions apply only to this specific plant due to agricultural regulations or other limitations. Other plants may still be available for shipping to these states.
If you have any questions about shipping restrictions, feel free to reach out to our team!