Buddleja, Bicolor Butterfly Bush, Golden Butterfly Bush, Summer Lilac 'Bicolor'

Buddleja x weyeriana

Family: Scrophulariaceae (skrof-yoo-larr-ee-AY-see-ee) (Info)
Genus: Buddleja (BUD-lee-uh) (Info)
Species: x weyeriana (wey-er-ee-AH-na) (Info)
Cultivar: Bicolor
View this plant in a garden




Water Requirements:

Drought-tolerant; suitable for xeriscaping

Average Water Needs; Water regularly; do not overwater

Sun Exposure:

Full Sun




Foliage Color:

Unknown - Tell us


6-8 ft. (1.8-2.4 m)


4-6 ft. (1.2-1.8 m)

6-8 ft. (1.8-2.4 m)


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)

Where to Grow:

Grow outdoors year-round in hardiness zone


Pollen may cause allergic reaction

Bloom Color:

Magenta (pink-purple)


Gold (yellow-orange)

Bloom Characteristics:

Flowers are good for cutting

This plant is attractive to bees, butterflies and/or birds

Flowers are fragrant

Bloom Size:

Unknown - Tell us

Bloom Time:

Mid Summer

Late Summer/Early Fall

Mid Fall

Blooms repeatedly

Other details:

Unknown - Tell us

Soil pH requirements:

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

Patent Information:


Propagation Methods:

From softwood cuttings

From semi-hardwood cuttings

Seed Collecting:

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


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

Conway, Arkansas

Fayetteville, Arkansas

Amesti, California

Corralitos, California

Elkhorn, California

Hydesville, California

Interlaken, California

Pajaro, California

Watsonville, California

Merritt Island, Florida

Brunswick, Georgia

Peoria, Illinois

West Friendship, Maryland

Lansing, Michigan

Saint Peters, Missouri

Hudson, New Hampshire

Mount Laurel, New Jersey

Vale, North Carolina

Oklahoma City, Oklahoma

Beaverton, Oregon(12 reports)

Houston, Pennsylvania

Mount Joy, Pennsylvania

Wynnewood, Pennsylvania

North Augusta, South Carolina

King George, Virginia

Grand Mound, Washington

Ridgefield, Washington

Rochester, Washington

Seattle, Washington

show all

Gardeners' Notes:


On Aug 2, 2011, MeganAmber from Conway, AR wrote:

This is a great bush with beautiful blooms. It has grown very big even after dying down to sticks from getting too much rain. We had tons of rain for a week in the spring and I thought it was dead. It came right back and is bigger than ever!


On Sep 14, 2010, Clary from Lewisburg, PA (Zone 6b) wrote:

I had this plant for 2 years. The growth of the shrub was excellent, and like my other buddlejas it flowered heavily.

However, something about the flower development was off because the buds would burst open and die the same day, so there were only ever buds and dried flowers on each branch. Not beautiful, not fragrant, and not attractive to nectar-feeders.

This condition occurred in varying temperature and rainfall conditions, so I removed the plant.


On Apr 12, 2010, braun06 from Irving, TX (Zone 8a) wrote:

I was not impressed with this plant. All the marketing photos show a variety of colors on each flower head but the plant I had only caried the same color with golden center to each floret. I dont know if this is typical.


On May 15, 2008, victorgardener from Lower Hudson Valley, NY (Zone 6b) wrote:

Gorgeous flowers and of course is a butterfly magnet. But it's proven to be terribly invasive here if you don't cut every spent bloom. I have methodically pulled out every one I could find.


On Oct 16, 2006, Meredith79 from Southeastern, NH (Zone 5b) wrote:

I think this is the only butterfy bush worth having. It is very fragrant and the fragrance is much nicer than the smell of all the other butterfly bushes I have and that I've seen in nurseries. Oh, and of course all butterflies love it! Just beware, butterfly bushes have been put on many states invasive plant lists. I keep mine dead-headed just in case, it needs it to bloom it's best anyways.


On Jan 16, 2005, slvossler from Lansing, MI (Zone 5b) wrote:

I have had this buddleia in my yard for 2 years. It is a pleasant specimen. It remains relatively small in contrast to some the others that I have. It does attract butterflies and hummingbirds into my yard. I would suggest this plant to anyone in the northern zones looking for a smaller butterfly bush to add to their garden. ( I live in zone 5b).


On Jun 16, 2004, Terry from Murfreesboro, TN (Zone 7a) wrote:

Just bought this one on a mailorder spring sale. I hope I'll get some blooms yet this summer (this variety has been on my wishlist since I first laid eyes on it!)


On Jan 3, 2004, KillerChihuahua from Elizabethton, TN (Zone 7a) wrote:

Fantastic plant, like all butterfly bushes, and this one has amazing colors - rasberry to gold.