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Symphyotrichum, Fall Aster, Hardy Aster 'Blue Autumn'

Symphyotrichum

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Family

Asteraceae (ass-ter-AY-see-ee)

Info

Genus

Symphyotrichum (sim-fy-oh-TRY-kum)

Info

Synonym

Aster

Sun Exposure

Full Sun

Foliage

Herbaceous

Height

6-12 in. (15-30 cm)

Spacing

9-12 in. (22-30 cm)

Hardiness

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)

Danger

N/A

Bloom Color

Blue-Violet

Bloom Time

Late Summer/Early Fall

Other Details

Gardener's Notes:

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coriaceous

ROSLINDALE, MA | April 2016 | neutral

US Plant Patent 17400 (2007)

The patent application claims hardiness only for Z5.

The cultivar name is 'Ou...Read More

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