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PlantFiles: Aromatic Aster, Fall Aster
Symphyotrichum oblongifolium 'October Skies'

Family: Asteraceae (ass-ter-AY-see-ee) (Info)
Genus: Symphyotrichum (sim-fy-oh-TRY-kum) (Info)
Species: oblongifolium (ob-long-ee-FOH-lee-um) (Info)
Cultivar: October Skies

Synonym:Aster oblongifolius

8 vendors have this plant for sale.

20 members have or want this plant for trade.

View this plant in a garden


18-24 in. (45-60 cm)

24-36 in. (60-90 cm)

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:
Full Sun


Bloom Color:
Light Blue

Bloom Time:
Late Summer/Early Fall
Mid Fall


Other details:
This plant is attractive to bees, butterflies and/or birds
Drought-tolerant; suitable for xeriscaping
Average Water Needs; Water regularly; do not overwater
This plant is resistant to deer

Soil pH requirements:
5.1 to 5.5 (strongly acidic)
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)

Patent Information:

Propagation Methods:
By dividing the rootball
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
From seed; stratify if sowing indoors
From seed; sow indoors before last frost

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

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2 positives
2 neutrals
No negatives

Gardeners' Notes:

Neutral coriaceous On Dec 8, 2014, coriaceous from ROSLINDALE, MA wrote:

A. oblongifolius is the latest aster in my gardens (tied with A. tataricus) to come into bloom, beginning in October and continuing to give color well after frost.

This cultivar is more compact and bushier than the species, which is floppy and needs support.

Selected by Charles Oliver in 1999 from a wild population growing on his land in southwest Pennsylvania.

Positive runnerboy713 On May 14, 2011, runnerboy713 from Westborough, MA (Zone 5b) wrote:

In it's second year, it has come back very strong, with the spring foliage covering 4x the area that it covered when planted.

Positive whitesam9 On Feb 20, 2011, whitesam9 from Dayton, OH (Zone 5b) wrote:

These grew very vigorously in my garden. I pinched them back a couple times in June to keep them compact. They were covered with blooms for several months last Fall. Great long-lasting flower display.

Neutral berrygirl On Mar 19, 2007, berrygirl from Braselton, GA (Zone 7b) wrote:

Med. 18" - Plant 18" apart. Z 3-8 Like 'Raydon's Favorite', a glowing bush of color in mid-Fall. This one is shorter, bushier. and bluer. It is hard to choose between these two.


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

Greenwich, Connecticut
Britt, Iowa
Crofton, Maryland
Peabody, Massachusetts
Westborough, Massachusetts
Cross Timbers, Missouri
Jamesburg, New Jersey
Tulsa, Oklahoma
Wilkes Barre, Pennsylvania
Johnson City, Tennessee
Memphis, Tennessee
Austin, Texas
Fort Worth, Texas
Garland, Texas
Newport News, Virginia

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