American Wisteria 'Blue Moon'

Wisteria macrostachya

Family: Papilionaceae (pa-pil-ee-uh-NAY-see-ee) (Info)
Genus: Wisteria (wis-TEER-ee-uh) (Info)
Species: macrostachya (mak-ro-STAK-yuh) (Info)
Cultivar: Blue Moon
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Foliage Color:

Unknown - Tell us

Bloom Characteristics:

Unknown - Tell us

Water Requirements:

Average Water Needs; Water regularly; do not overwater

Where to Grow:

Grow outdoors year-round


8-10 ft. (2.4-3 m)


4-6 ft. (1.2-1.8 m)


USDA Zone 3b: to -37.2 C (-35 F)

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)

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

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

Sun Exposure:

Sun to Partial Shade


Seed is poisonous if ingested

All parts of plant are poisonous if ingested

Bloom Color:



Bloom Time:

Mid Summer




Other details:

Unknown - Tell us

Soil pH requirements:

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

Patent Information:


Propagation Methods:

From leaf cuttings

By grafting

By simple layering

Seed Collecting:

Allow pods to dry on plant; break open to collect seeds


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

Rensselaer, Indiana

Kalona, Iowa

Alexandria, Louisiana

Roslindale, Massachusetts

Allen Park, Michigan

Minneapolis, Minnesota (2 reports)

Saint Paul, Minnesota

Beatrice, Nebraska

Elizabeth City, North Carolina

Knoxville, Tennessee

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Gardeners' Notes:


On Feb 12, 2014, coriaceous from ROSLINDALE, MA wrote:

I have mixed feelings about this plant.

I tried it because authoritative sources claimed it was less aggressive than the more commonly grown Asian species. I planted an 18" rooted cutting in May. Sixteen months later it hit the roofline of a two-story building, and it hasn't slowed down since. It has required just as much pruning as the Asian species. I'm always ripping out basal runners that race across the ground and root at every node. Also it self-sows vigorously despite my attempts at deadheading. It requires a big strong support because it eventually can grow just as tall and as heavy as the Asian species.

It began blooming in its second year. Flower clusters are almost as long as with Chinese wisteria, and the flowers are a bit smaller, though still sho... read more


On Jan 24, 2013, flowers4birds from Chilton, WI (Zone 5b) wrote:

local deer pruned my 2 yr. old plant severely multiple times weeks apart; not too poison for them.


On Jul 26, 2009, Marlina from Blaine, MN (Zone 4b) wrote:

My husband just loves this plant. I am not as crazy it has big pea pod type seeds that pop all over and you have to constantly keep it growing where you want so it doesn't destroy trees or roofs. Also if you don't like bees we had a huge crop when they bloom. All in all I guess if it was like the honeysuckle vine and drew the hummers I would love it,but unfortunately it doesn't.


On Jun 8, 2009, KSBaptisia from Beatrice, NE (Zone 5b) wrote:

Beautiful cultivar of the native species of Wisteria and great substitute for the highly invasive Chinese and Japanese versions.