Heads-up! Our Annual Photo contest will be open for entries this Thursday the 18th!

Buddleja, Butterfly Bush, Orange-eye Butterfly Bush, Summer Lilac 'Dartmoor'

Buddleja davidii

Family: Scrophulariaceae (skrof-yoo-larr-ee-AY-see-ee) (Info)
Genus: Buddleja (BUD-lee-uh) (Info)
Species: davidii (duh-VID-ee-eye) (Info)
Cultivar: Dartmoor




Water Requirements:

Drought-tolerant; suitable for xeriscaping

Average Water Needs; Water regularly; do not overwater

Sun Exposure:

Full Sun

Sun to Partial Shade



Foliage Color:



6-8 ft. (1.8-2.4 m)

8-10 ft. (2.4-3 m)


4-6 ft. (1.2-1.8 m)

6-8 ft. (1.8-2.4 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)

Where to Grow:

Grow outdoors year-round in hardiness zone


Pollen may cause allergic reaction

Bloom Color:


Bloom Characteristics:

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

Other details:

May be a noxious weed or invasive

Soil pH requirements:

5.6 to 6.0 (acidic)

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

Patent Information:

Unknown - Tell us

Propagation Methods:

From woody stem cuttings

From softwood cuttings

From semi-hardwood cuttings

Seed Collecting:

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


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

Jones, Alabama

Palm Springs, California

Sacramento, California

Old Lyme, Connecticut

Marietta, Georgia

Brookeville, Maryland

Edgewater, Maryland

Mathiston, Mississippi

Ballwin, Missouri

Conway, Missouri

Nashua, New Hampshire

Barnegat, New Jersey

Hurley, New Mexico

North Ridgeville, Ohio

Willoughby, Ohio

Beaverton, Oregon

Yachats, Oregon

Peace Dale, Rhode Island

Austin, Texas

El Paso, Texas

Lubbock, Texas

Suffolk, Virginia

Puyallup, Washington

show all

Gardeners' Notes:


On Aug 2, 2016, coriaceous from ROSLINDALE, MA wrote:

The extra large flower heads have extra flowering side shoots, making them especially showy.

This Royal Horticultural Society gave this cultivar its coveted Award of Garden Merit. "Very distinctive inflorescences. Very big and spreading, fantastic if you have the space. Height and spread 300x400cm." http://apps.rhs.org.uk/planttrials/TrialReports/Buddleja 201...

This species isn't long-lived (usually under 10 years). Hard pruning (to 6") annually in early spring helps it renew itself and improves bloom.

All B. davdii cultivars require weekly deadheading for them to look and bloom its best.

Butterfly bushes may be good nect... read more


On Oct 17, 2006, lciflady from Berwyn, IL wrote:

I had a two-year old bush that grew well and overwintered just fine. I followed the directions that I've seen over and over and pruned it all the way back in March of 2006. The plant did not come back. I'm wondering about the merits of hard pruning this bush.


On Jul 30, 2006, CaptMicha from Brookeville, MD (Zone 7a) wrote:

This very reliable buddleja basically pops up every summer, bursting with flowers from early summer to fall.

It attracts butterflies much better than my 'Black Knight' and the flower cones are much longer and puts out more flowers than the BK.

My plants grows in poor alkaline soil with no ammendments or special care but looks like it's on steriods.


On Oct 20, 2003, wnstarr from Puyallup, WA (Zone 5a) wrote:

This one beautiful plant and escaped from the garden and is considered a "wildflower" in Western Washington. It blooms attract butterflies and humming birds. It was know as a butterfly bush to me as a kid. It needs to be severly cut back to the ground each year to encourage new growth from which you will get your blooms. It has been culitvated to now come in many different colors. Mature plant will be quite large. It has even managed to grown in the old decaying mortor between old bricks on many old buildings. Some can be seen growing as high as 3 or 4 stories above the street level.


On Oct 20, 2003, Dravencat from Edgewater, MD (Zone 7a) wrote:

I planted this in early summer 2003, its grown about 1 foot since I planted it in full sun. Very sandy soil here, added compose to the soil when I planted it. Im still getting many blooms in mid October. I only trim branches from the base so I dont keep running it over with the lawnmower and put up stakes to train the larger branches to grow up instead of out, It seemed to get even more flowers after I did that. The flowers smells wonderful.


On Jun 1, 2003, ToddNewbie from Troy, MI wrote:

Grow best in rich, well-drained soil. If soil is too clay-based, consider adding some sand or compost to create better environment. We have nine in both the light purple and also in yellow (accidentally; we only ordered purple, but we find the yellow to be attractive as well). Do not prune back to the base as is often suggested; we prune selectively and new blooms and leaves appear from old growth. Ours bloom in full shade. The most important aspect seems to be the rich, well-drained soil.


On Feb 26, 2003, lauraslair from Youngstown, OH wrote:

I have a 4 yr old specimen that hasnt grown over 4 ft tall. its very sparce and all could be attributed to the soil that I have around my house that is hard to get rid of due to severe tree root infestation( the neighbors) and clay soil. the best I could do was add to the soil after I worked it abit. now I'm wondering if this plant will grow in a raised bed. so will attempt to move it in early spring as if I were planting it for the first time would be my only drawback, other than the plant dying completely. so will post again when this is done for the results.