Light Needs
Mature Height
Mature Spread
Growing Zones
Double Down® Hydrangea, or Hydrangea mac. Double Down® is a stunning shrub loaded with reblooming orbs of magnificent double flowers that bloom in the summer. In contrast to its vivacious blossoms, Double Down® also has dense, glossy green foliage. Reaching heights of 3 to 4 feet with a spread of 3 to 4 feet, the flowers of this incredible hydrangea are a vivid shade of cobalt blue in acidic soils, and lavender to pastel pink in alkaline and neutral soils. These Hydrangeas bloom most heavily in the summer, but can continue blooming and reblooming well into the autumn season. As the flowers of the Double Down® mature, the flowers take on hints of green.
This stunning mophead hydrangea is sure to be a favorite in your garden. Native to Japan, the Double Down® Hydrangea is a rounded variety with a compact, symmetrical habit. They are a favorite of florists and make excellent, long-lasting cut flowers, and since they grow from both old and new wood, they will continue to amaze even after a long winter. They are not deer resistant, and we recommend using a deer repellent, especially on new buds or in areas with high populations of deer.
Double Down Hydrangea Care
The low-maintenance Double Down® Hydrangea thrives in part shade to part sun, ideally with morning sun and afternoon shade. It should be watered regularly until the plant has reached maturity. Established plants will need average water. You should feed your hydrangeas annually, in the spring, with organic fertilizer. To encourage a more vivid shade of blue, add aluminum to the soil before planting. Hydrangeas prefer moist soil with good drainage. They do not tolerate standing water.
Double Down Hydrangea Spacing
The Double Down® Hydrangea is a favorite of florists and gardeners, and can be incorporated in a variety of floral arrangements and bouquets. They look great planted in shady, compact spaces, or in pots and containers with excellent drainage. Hydrangeas need good air flow to thrive and should be spaced a minimum of 3 feet apart center to center. They are a welcome addition to any small garden.
Double Down 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
- Full Shade to Part Shade (0-4 Hours Direct Sun)
- Mature Height
- 3-4 Feet
- Mature Spread
- 3-4 Feet
- Growth Rate
- Slow
- Growth Habit
- , Mounded
- Water Needs
- Consistently Moist
Flowers & Foliage
- Flower Colors
- , Blue, Pink, Multi Colored
- Flower Description
- Pink or Blue Depending on Soil pH
- Bloom Time
- Early to Late 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
- , Herbaceous, Deciduous
- Seasonal Interest
- , Summer Flowering, Fall Flowering, 3 Season Interest
Garden Benefits
Plant Overview
- Common Name
- Double Down Hydrangea
- Botanical Name
- Hydrangea macrophylla 'Hydrsrpdow'
- Brand
- Bloomables
- 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!