Light Needs
Mature Height
Mature Spread
Growing Zones
This deciduous mop head hydrangea produces gorgeous 4-inch blue blooms all summer long. Blossoms appear throughout the plant and not just on the top like that of other varieties. The flower heads may turn pinker in more alkaline soils.
This quick-growing plant will reach full size in only two or three years. It’s a good choice for a fast-growing privacy screen. This shrub can be used to create a colorful hedge, foundation planting, an addition to a mixed shrub border or as an accent plant. Cut a few flowers to create beautiful bouquets and use the dried flowers for craft projects.
Nikko Blue Hydrangea Care
Nikko Blue Hydrangea will mature to a height and width of 4 to 6 feet in a mounded shape. Flowers are produced on the previous year’s growth. Hydrangea macrophylla 'Nikko Blue' prefers partial sun conditions in moist, well-drained soils. Plant it in a sheltered location away from prevailing winds in windier locations. This shrub generally doesn’t need pruning. Prune out weak or winter-damaged stems in late winter/early spring. If shaping is desired, cutting back flowering stems to a pair of healthy buds after the flowering period has ended.
Nikko Blue Hydrangea Spacing
Space individual plants 4 feet apart, center on center to create a garden border. In a mass planting, space 6 feet apart. When planting in a garden planter, use a container at least 36 inches wide with drainage holes.
Nikko Blue Hydrangea Plant Facts
Growing Conditions
- Hardiness ZonesGrowing Zones
- USDA Zones 5 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
- Partial Sun (5-6 Hours Direct Sun)
- Mature Height
- 4-6 Feet
- Mature Spread
- 4-6 Feet
- Growth Rate
- Moderate
- Growth Habit
- , Mounded
- Water Needs
- Average
Flowers & Foliage
- Flower Colors
- , Blue
- Flower Description
- Bright blue
- Bloom Time
- Summer
- Blooms On
-
Old 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
- Right after flowering
- Foliage Color
- , Green
- Foliage Description
- Dark Green
- Foliage Type
- , Deciduous
- Seasonal Interest
- , Summer Flowering, Fall Interest, 3 Season Interest
Garden Benefits
Plant Overview
- Common Name
- NIKKO BLUE Hydrangea
- Botanical Name
- HYDRANGEA M 'NIKKO BLUE'
- Plant Type
- Shrub
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.
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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!