Spiraea, Japanese Meadowsweet, Japanese Spirea, Maybush 'Neon Flash'

Spiraeax bumalda

Family
Rosaceae (ro-ZAY-see-ee)
Genus
Spiraea (spy-REE-ah)
Species
x bumalda (boo-MAHL-dah)
Synonym
Spiraea japonica
Sun Exposure
Sun to Partial Shade
Foliage
Deciduous
Height
24-36 in. (60-90 cm)
36-48 in. (90-120 cm)
Spacing
36-48 in. (90-120 cm)
Hardiness
USDA Zone 4a: to -34.4 °C (-30 °F)
USDA Zone 4b: to -31.6 °C (-25 °F)
USDA Zone 5a: to -28.8 °C (-20 °F)
USDA Zone 5b: to -26.1 °C (-15 °F)
USDA Zone 6a: to -23.3 °C (-10 °F)
USDA Zone 6b: to -20.5 °C (-5 °F)
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
Bloom Color
Pink
Rose/Mauve
Bloom Time
Mid Spring
Late Spring/Early Summer
Mid Summer
Other Details
Category
Shrubs
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color
Where to Grow
Bloom Characteristics
Bloom Size
Other details
Soil pH requirements
6.1 to 6.5 (mildly acidic)
Patent Information
Propagation Methods
From leaf cuttings
Self-sows freely; deadhead if you do not want volunteer seedlings next season
Seed Collecting
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed
Regional

This plant is said to grow outdoors in the following regions:

San Jose, California

Susanville, California

Algonquin, Illinois

Spring Grove, Illinois

Springfield, Illinois

Logansport, Indiana

Worthville, Kentucky

Millersville, Maryland

Bridgewater, Massachusetts

Westland, Michigan

Lincoln, Nebraska

Raleigh, North Carolina

Mogadore, Ohio

Baker City, Oregon

Salem, Oregon

Lansdowne, Pennsylvania

Pittsburgh, Pennsylvania

West Chester, Pennsylvania

Knoxville, Tennessee

Kaysville, Utah

Falls Church, Virginia

College Place, Washington

MOXEE, Washington

Beverly, West Virginia

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Gardener's Notes:

3
positives
1
neutral
0
negative
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R
Downingtown, PA | August 2015 | positive

I sold some at a nursery in West Chester, PA, over a few years in the early 2000's. It was a new cultivar for me. It is very similar to A...Read More

N
Algonquin, IL (Zone 5a) | June 2013 | positive

This is the third year for my 'Neon Flash'. When I bought it from Bluestone Perennials it was a tiny little thing in a small pot as it w...Read More

S
Westland, MI (Zone 6a) | May 2006 | positive

Mine are just gorgeous every year. They are planted in full sun, and I cut them almost to the ground in early spring. They are quite ea...Read More

G
(Zone 5a) | January 2006 | neutral

I bought this a number of years ago on clearance, and I'm not sure I'm really liking it. Perhaps I'm just not into Spirea. It blooms an...Read More

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