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PlantFiles: Tube Clematis
Clematis heracleifolia 'Alan Bloom'

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Family: Ranunculaceae (ra-nun-kew-LAY-see-ee) (Info)
Genus: Clematis (KLEM-uh-tiss) (Info)
Species: heracleifolia (hair-uh-klee-ih-FOH-lee-uh) (Info)
Cultivar: Alan Bloom
Additional cultivar information: (PP11498, aka Alblo, Bressingham Bluebird)
Hybridized by Bloom; Year of Registration or Introduction: 1998

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Group:
Herbaceous

Height:
24-36 in. (60-90 cm)

Spacing:
24-36 in. (60-90 cm)

Hardiness:
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)

Bloom Color:
Dark Blue
Blue-Violet

Flower Fragrance:
No fragrance

Bloom Shape:
Single
Bell

Bloom Diameter:
Small - less than 2 inches (5 cm)

Bloom Time:
Mid Summer
Late Summer/Early Fall

Sun Exposure:
Full Sun
Sun to Partial Shade

Other details:
Average Water Needs; Water regularly; do not overwater

Danger:
All parts of plant are poisonous if ingested
Handling plant may cause skin irritation or allergic reaction

Pruning Groups:
Group 3 - Summer/Fall bloomers; prune hard in early spring

Patent Information:
Patented

Propagation Methods:
By dividing the rootball
From herbaceous stem cuttings
From softwood cuttings
From semi-hardwood cuttings

Seed Collecting:
Allow seedheads to dry on plants; remove and collect seeds
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed

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By jody
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There are a total of 11 photos.
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Profile:

2 positives
1 neutral
No negatives

Gardeners' Notes:

RatingAuthorContent
Positive jeanherlihy On Mar 15, 2011, jeanherlihy from Brunswick, ME wrote:

This shrub clematis is awesome! Gorgeous small, deep blue/purple flowers bloom for a long time in late summer, followed by numerous interesting seed pods. It is a space hog, and spreads by long root like runners. Easy to dig up!
I prune it back to ground in spring. Zone 5

Positive ms_greenjeans On May 28, 2010, ms_greenjeans from Hopkins, MN (Zone 4a) wrote:

Also known as 'Alblo'. I am successfully growing these in zone 4a. I first bought two of these for a sunny garden spot in 2008 and they are still thriving in their third summer. They have a nice full shape with light green foliage which contrasts nicely with the beautiful dark blue/purple blooms. They have been very trouble-free. A lot of people ask about it.
Update 2011: These now bloom very heavily. The stems get quite long and weave themselves up through the baptisia I have planted nearby. I have divided and transplanted the originals and the divisions barely skipped a beat. They are no longer sold anyplace that I can find, either locally or online.
Update 2012: Apparently this self-seeds. I am going to plant some of the babies elsewhere and see if they come up the same as the parent.
Update 2013: The babies do come up true to the parent plant. I agree, this is a space hog, but worth it. Also, in a summer of seeing virtually no butterflies at all, I have seen only two in my yard and both were on this plant. Yeah!

Neutral mystic On Jan 5, 2005, mystic from Ewing, KY (Zone 6a) wrote:

Was grown by Blooms of Bressingham in England. It was first named Bressingham Bluebird by the founder of the nursery, Alan Bloom. It was later renamed in honour of his 90th birthday. Alan Bloom is the trade name today.

Regional...

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

Brunswick, Maine
Hopkins, Minnesota
Dennisville, New Jersey
Floresville, Texas



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