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PlantFiles: New England Aster, Michaelmas Daisy, Hardy Aster
Symphyotrichum novae-angliae 'September Ruby'

Family: Asteraceae (ass-ter-AY-see-ee) (Info)
Genus: Symphyotrichum (sim-fy-oh-TRY-kum) (Info)
Species: novae-angliae (NO-vee ANG-lee-a) (Info)
Cultivar: September Ruby

Synonym:Aster novae-angliae
Synonym:Aster roseus
Synonym:Lasallea novae-angliae
Synonym:Virgulus novae-angliae

3 vendors have this plant for sale.

6 members have or want this plant for trade.


12-18 in. (30-45 cm)
18-24 in. (45-60 cm)
24-36 in. (60-90 cm)
36-48 in. (90-120 cm)
4-6 ft. (1.2-1.8 m)

9-12 in. (22-30 cm)

USDA Zone 3a: to -39.9 C (-40 F)
USDA Zone 3b: to -37.2 C (-35 F)
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
Sun to Partial Shade


Bloom Color:
Fuchsia (Red-Purple)

Bloom Time:
Late Summer/Early Fall
Mid Fall


Other details:
This plant is attractive to bees, butterflies and/or birds
Average Water Needs; Water regularly; do not overwater

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

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
1 neutral
No negatives

Gardeners' Notes:

Positive klippenshliefer On Sep 28, 2014, klippenshliefer from Toronto
Canada wrote:

I love this plant though my husband calls it my "weed". It is blooming right now (I live in Toronto, Ontario) and the bees are loving it. I have had it for a few years, but this year it is nicer than it has ever been, because I gave it the so-called Chelsea Chop or something like that in June, by which I mean I cut it back by at least a foot. This fall it is shorter, stronger, more robust looking than before, but still quite tall - about 5 feet or so.

Positive coriaceous On Sep 28, 2014, coriaceous from ROSLINDALE, MA wrote:

The flower color is a gorgeous, rich deep ruby or wine red, deeper than that of any other cultivar I know. It isn't well captured in the photos. It combines well with a wide range of other colors.

I didn't cut this plant back last spring, and its stems are limp and floppy. If I hadn't draped it over a retaining wall, it would have been buried in the foliage of the other (shorter) perennials of the border. Stems are so weak that it would have been hard to stake.

Said to be a weak grower. Even so, I'd allow 20" spacing between plants.

In the Chicao Botanic Garden's evaluation of aster performance, this cultivar rated only 2 stars out of a possible 5. They found it highly susceptible to mildew.

Bred by Ernst Benery in Germany before 1951. The original name was 'Septemberrubin', and it's often listed that way in catalogs.

As with all New England asters, some people develop a rash after handling the hairy foliage.

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

Tall 4' - Plant 20" apart. Zone 3-8 These New England Asters form semi-woody clumps which flower from late summer into fall. Tolerant of wet conditions, they are native to Eastern and Central United States. Mildew resistant. Ruby red flowers. Hardy and easily grown.


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

San Leandro, California
Cordele, Georgia
Roslindale, Massachusetts
Columbus, Ohio

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