
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 Information
USDA Hardiness Zones: 5 - 9 |
Plant Type: Bushes |
Light Exposure: Partial Shade to Full Sun (At Least 3 Hours Of Direct Sunlight) |
Mature Height: 6 - 7 Feet |
Mature Spread: 6 - 7 Feet |
Spacing: 6 - 7 Feet |
Habit: Upright |
Flower Color(s): Blue |
Flower Description: |
Bloom Period: All Summer |
Foliage Type: Deciduous |
Foliage Color(s): Green |
Foliage Description: Dark Green |
Seasonal Interest: Summer Flowering |
Watering: Average |
Resists: Disease |
Tolerates: Salt |
Attracts: Butterflies |
Container Role: |
Uses: Wildlife Gardens |
Features: Attracts Pollinators, Cut Flowers, Deadheading Not Necessary, Low Maintenance |
Brand: |
Common Name: NIKKO BLUE Hydrangea |
Other Name(s): |
Scientific Name: HYDRANGEA M `NIKKO BLUE` |
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

We stand behind our plants with industry-leading guarantees to give you peace of mind.
We want your plants to arrive in great condition! If you notice any issues upon delivery, contact us within 3 days.
Starting January 1, 2025 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: AZ, CA, ID, MT, NV, OR, UT, WA, 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!