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PlantFiles: Japanese Spirea, Japanese Meadowsweet, Maybush
Spiraea x bumalda 'Neon Flash'

Family: Rosaceae (ro-ZAY-see-ee) (Info)
Genus: Spiraea (spy-REE-ah) (Info)
Species: x bumalda (boo-MAHL-dah) (Info)
Cultivar: Neon Flash

Synonym:Spiraea japonica

6 vendors have this plant for sale.

7 members have or want this plant for trade.


24-36 in. (60-90 cm)
36-48 in. (90-120 cm)

36-48 in. (90-120 cm)

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)

Sun Exposure:
Sun to Partial Shade

Unknown - Tell us

Bloom Color:

Bloom Time:
Mid Spring
Late Spring/Early Summer
Mid Summer


Other details:
Self-sows freely; deadhead if you do not want volunteer seedlings next season

Soil pH requirements:
6.1 to 6.5 (mildly acidic)

Patent Information:
Unknown - Tell us

Propagation Methods:
From leaf cuttings

Seed Collecting:
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed

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2 positives
1 neutral
No negatives

Gardeners' Notes:

Positive nutsaboutnature On Jun 29, 2013, nutsaboutnature from Algonquin, IL (Zone 5a) wrote:

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 was shipped by mail. It even came with it's own slow-release fertilizer "pill".

The flower clusters started out small, but this year they've really spread!

It survived a very soggy bed after an extremely wet spring this year that killed some of my other plants.

The flower color is a gorgeous, almost fluorescent...a Hot Deep Pink.

I was shown at a nursery how Spirea can be sheared back... and shaped if you want...over and over, which may even promote reblooming.

Love it!!

Positive sharonmi On May 2, 2006, sharonmi from Westland, MI (Zone 6a) wrote:

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 easy to propogate from stem cuttings.

Neutral Gabrielle On Jan 16, 2006, Gabrielle from (Zone 5a) wrote:

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 and does well enough, but at this point, it is just filling space and may be removed if that space is needed for something else.


This plant has been said to grow 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
Knoxville, Tennessee
Kaysville, Utah
Falls Church, Virginia
College Place, Washington
Moxee, Washington
Beverly, West Virginia

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