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PlantFiles: Butterfly Bush, Summer Lilac, Orange-eye Butterfly Bush
Buddleja davidii var. nanhoensis 'Nanho Blue'

Family: Buddlejaceae
Genus: Buddleja (BUD-lee-uh) (Info)
Species: davidii var. nanhoensis
Cultivar: Nanho Blue

Synonym:Buddleia davidii var. nanhoensis

6 vendors have this plant for sale.

19 members have or want this plant for trade.


4-6 ft. (1.2-1.8 m)

4-6 ft. (1.2-1.8 m)

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)
USDA Zone 9a: to -6.6 C (20 F)
USDA Zone 9b: to -3.8 C (25 F)

Sun Exposure:
Full Sun

Pollen may cause allergic reaction

Bloom Color:
Medium Blue

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


Other details:
This plant is attractive to bees, butterflies and/or birds
Average Water Needs; Water regularly; do not overwater

Soil pH requirements:
6.6 to 7.5 (neutral)

Patent Information:
Unknown - Tell us

Propagation Methods:
By simple layering
By air layering

Seed Collecting:
Bag seedheads to capture ripening seed
Collect seedhead/pod when flowers fade; allow to dry
Allow seedheads to dry on plants; remove and collect seeds

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There are a total of 11 photos.
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4 positives
1 neutral
No negatives

Gardeners' Notes:

Positive homespie01 On Jun 26, 2014, homespie01 from Corpus Christi, TX (Zone 9a) wrote:

Has anyone heard of the nanho blue reverting to white? I could swear I planted a blue one last year, but as soon as winter was over, it started blooming white. The blooms got super large, and its growth exploded.

Positive Marilynbeth On Nov 20, 2006, Marilynbeth from Hebron, KY wrote:

I love it! It is beautiful and try to keep it pinched back for compactness and keep it deaded for more blooms.

Neutral smiln32 On Nov 25, 2004, smiln32 from Oklahoma City, OK (Zone 7a) wrote:

This variety of butterfly bush is a lovely shade of blue.

In cooler zones, Buddleias die back to the ground each year, sending up a dense group of new shoots in late spring that quickly develop into a 6-8ft shrub. In warmer zones, it can reach a height of 10'. It has a light scent which attracts butterflies and bees. I'm not sure about hummingbirds, but possibly they are attracted to this plant, too.

Positive foxygardener On Jul 8, 2004, foxygardener from Kyle, TX wrote:

Two of these plants have been growing on my family property in Uhland, Tx, just ne of San Marcos, Tx, for at least 30 years. They are at least 12-14' high and bloom beautifully each spring until the early part of June. The blooms are a beautiful filler in rose bouquets! We never do anything to the bushes, except enjoy the flowers and the fragrance.

Positive langbr On Apr 14, 2004, langbr from Olathe, KS (Zone 6a) wrote:

Love this bush. Trim it back every spring and it's soon 4-foot tall and wide again! Profuse bloomer, butterfly and bee attracter, and gorgeous for cut flowers. Extremely hardy - I'm Zone 5b and it does fine in Zone 5.


This plant has been said to grow in the following regions:

Pelham, Alabama
Hot Springs National Park, Arkansas
Morrilton, Arkansas
Brea, California
Lake Nacimiento, California
Long Beach, California
Martinez, California
Menifee, California
Quincy, Florida
Saint Cloud, Florida
Welaka, Florida
Dacula, Georgia
Douglas, Georgia
Marietta, Georgia
Winston, Georgia
South Bend, Indiana
Des Moines, Iowa
Iowa City, Iowa
Clay Center, Kansas
Olathe, Kansas
Hebron, Kentucky
Leeds, Massachusetts
Ludington, Michigan
Royal Oak, Michigan
Conway, Missouri
Exeter, New Hampshire
Lanoka Harbor, New Jersey
Point Pleasant Beach, New Jersey
Ossining, New York
Cary, North Carolina
Greenville, North Carolina
Mars Hill, North Carolina
Weaverville, North Carolina
Defiance, Ohio
Latta, South Carolina
North Augusta, South Carolina
Abilene, Texas
Alice, Texas
Austin, Texas
Corpus Christi, Texas
Dallas, Texas
Fort Worth, Texas (2 reports)
Irving, Texas
Lincoln, Texas
Port Arthur, Texas
Spring Branch, Texas
Harrisonburg, Virginia
Grand Mound, Washington
Madison, Wisconsin
Riverton, Wyoming

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