Light Needs
Mature Height
Mature Spread
Growing Zones
Azure Skies™ Hydrangea, or Hydrangea mac., is a medium-sized shrub with reblooming globes of loaded, mophead flowers that bloom in the summer and provide interesting contrast to its thick, deep-green foliage. Reaching heights of 5 to 6 feet with a spread of 5 to 6 feet, the flowers of this incredible hydrangea range from rich pink to cool blue, depending on the soil pH. These Hydrangeas bloom most heavily in the summer, but can continue blooming and reblooming, well into the fall.
A Dr. Michael Dirr selection, and an exclusive for “Handpicked for You®” program participants, this incredible Hydrangea is sure to be a favorite in your garden. Native to Japan, the Azure Skies™ Hydrangea is a rounded variety with an upright symmetrical habit. They make excellent, long-lasting cut flowers, and you can both dry and preserve the flowers for a winter arrangement.
Azure Skies™ Hydrangea Care
The low-maintenance Azure Skies™ Hydrangea should be planted in areas with mild winters. It thrives in partial sun with dappled shade, and should be watered deeply and regularly until established. Mature plants need average water. You should feed your hydrangeas yearly with organic fertilizer. It prefers moist soil with good drainage. If you would like to prune your hydrangeas for size control, it is best to do it directly after they bloom in late summer to early fall.
You can control the color of pink or blue hydrangeas by adjusting the soil pH. For bluer colors, soil pH should be below 5.5. For brighter pinks and reds, alkaline solid with a pH of 7.0 or higher is ideal. If you choose to manipulate the color of your hydrangeas, it should be done in the spring before the plant blooms. To keep flowers blue, add aluminum sulfate to the soil. To keep them pink, add lime to the soil or apply super phosphate.
Azure Skies™ Hydrangea Spacing
The Azure Skies™ Hydrangea is a favorite of florists and gardeners, and can be incorporated in arrangements and bouquets in need of dimension and interest. They are gorgeous, planted in shady, compact spaces, or in pots and containers with excellent drainage. Hydrangeas need adequate air flow to thrive and should be spaced a minimum of 2 feet apart center to center.
Azure Skies™ Hydrangea Plant Facts
Growing Conditions
- Hardiness ZonesGrowing Zones
- USDA Zones 5 to 8 (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
- 5-6 Feet
- Mature Spread
- 5-6 Feet
- Growth Rate
- Moderate
- Growth Habit
- , Mounded
- Water Needs
- Consistently Moist
Flowers & Foliage
- Flower Colors
- , Blue, Pink
- Flower Description
- Sky Blue
- Bloom Time
- Early to Mid-Summer
- Blooms On
-
Both New and 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
- Lightly, right after the first flush of flowers
- Foliage Color
- , Green
- Foliage Description
- Green
- Foliage Type
- , Deciduous
- Seasonal Interest
- , Summer Flowering, 3 Season Interest
Garden Benefits
Plant Overview
- Common Name
- Azure Skies™ Hydrangea
- Botanical Name
- HYDRANGEA M 'AZURE SKIES'
- Brand
- Plants That Work
- 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
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, 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!