Hydrangea macrophylla 'Nikko Blue'
shrub

Nikko Blue Hydrangea

Hydrangea macrophylla 'Nikko Blue'

$24.95

The Story

Plant Bio

Nikko Blue is a popular variety of Hydrangea macrophylla, known for its large, blue flower clusters when grown in acidic soil.

The flower color can change based on soil pH, making it a unique choice for gardeners interested in color variation.

Uses & Benefits:

Ornamental UsesVivid blue blooms add striking color and elegance to shade gardens.
Practical UsesProvides privacy and natural screening in landscaped areas.
Ecological BenefitsSupports pollinators like bees and butterflies with abundant nectar.
SpeciesHydrangea macrophyllaBigleaf Hydrangea

Essentials

At a Glance

Plant Type

Shrub

Height

60 inches

Width

60 inches

Light

Partial Sun, Shade

Zones

5, 6, 7, 8, 9

Water

Moderate

Humidity

High

Lifespan

10-15 years

Native To

Japan

Toxicity

Toxic to pets if ingested

Bloom period

Summer – Late summer

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In flower about 2 months of the year

Marketplace

Where to Buy

Fast Growing Trees
In Stock$24.95
PlantingTree
In Stock$24.95
Garden Goods Direct
In Stock$69.95

Shipping costs Year-round shipping Free shipping

Planting

How to Grow

  1. Tuck well-draining, acidic soil mix around the roots.
  2. Water deeply once a week during the growing season.
  3. Mist foliage regularly to maintain humidity levels.
  4. Prune dead or damaged stems in late winter or early spring.
  5. Apply a balanced fertilizer in early spring and mid-summer.
  6. Mulch around base to conserve moisture and regulate soil temperature.

Pro Tip

Plant in partial shade for vibrant blooms and healthy growth.

Keep It Thriving

Care Guide

Do

  • Water consistently to keep soil moist but not waterlogged 🌱
  • Prune to shape and remove dead wood annually
  • Feed with a high-phosphorus fertilizer during blooming season

Don't

  • Avoid overwatering which can cause root rot ❌
  • Do not expose to full, harsh sunlight which can scorch leaves
  • Refrain from heavy fertilizing late in the season

Seasonal Care Calendar

TaskJanFebMarAprMayJunJulAugSepOctNovDec
Deadhead
Fertilize
Mulch
Plant
Prune
Spring Cleanup
Winter Prep

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Vivid blue flowering shrub for garden bordersElegant focal point in shaded garden bedsDecorative hedging with lush foliage

Companion Plants

HostaFerns AstilbeHeucheraJapanese Maple

Multiply

Propagation Methods

Good to Know

Common Questions

Nikko Blue Hydrangea questions

What zones can Nikko Blue Hydrangea grow in?

Nikko Blue Hydrangea is hardy in USDA Zones 5–9. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Nikko Blue Hydrangea deer resistant?

Not reliably. Deer may browse Nikko Blue Hydrangea, especially tender spring growth — plan on repellents or fencing where pressure is high.

When does Nikko Blue Hydrangea bloom?

Nikko Blue Hydrangea typically blooms in summer through late summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Nikko Blue Hydrangea need full sun?

Nikko Blue Hydrangea does best in part shade.

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Keep exploring

Grow Nikko Blue Hydrangea with confidence

See it in a design of your actual yard, get zone-matched care reminders, and track it season by season in your garden journal.

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