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Symphyotrichum oblongifolium (Nutt.) G.L. Nesom
Aromatic aster, Aromatic American aster, Fall aster, Wild blue aster, Shale aster
Synonym(s): Aster kumleinii, Aster oblongifolius, Aster oblongifolius var. angustatus, Aster oblongifolius var. orientis, Aster oblongifolius var. rigidulus, Lasallea oblongifolia, Virgulus oblongifolius
USDA Symbol: syob
USDA Native Status: L48 (N)
This perennialís rigid stems, usually less than 20 in. tall, are much-branched from the base. The narrow leaves and stems are sparsely covered with short hairs. Pink or lavender-blue flowers are many-petaled and aromatic with a yellow center.
Plant CharacteristicsDuration: Perennial Habit: Herb Size Notes:
1-2 feet. Fruit: Size Class:
Bloom InformationBloom Color: Purple , Violet
Bloom Time: Sep , Oct , Nov
, WY Native Distribution: PA
w. to n.e. WY
& TX Native Habitat:
Frequent in calcareous prairies of Edwards Plateau and lower plains Country. Well-drained sand, loam, clay, caliche, limestone.
Growing ConditionsWater Use:
Low Light Requirement:
Sun , Part Shade Soil Moisture:
Dry , Moist Cold Tolerant:
Rocky, calcareous or sandy soils. Well drained. Conditions Comments:
Fall aster creates dazzling purple mounds in the fall season. It slowly colonizes by stolons, so thin regularly to control it. The plant may open up if it gets to top heavy so it is a good idea to keep it thick by pruning it back by no more than half in June. After it goes dormant, wait to cut back to the basal rosette
in late fall, early winter.
BenefitConspicuous Flowers: yes
Nectar Source: yes
PropagationPropagation Material: Seeds
Description: Sow seeds, 5/8 deep, outside in fall or provide cold stratification. Also propagated by softwood cuttings taken in late spring.
Seed Collection: Not Available
Seed Treatment: Not Available
Commercially Avail: yes
Mr. Smarty Plants says
Native flowers for Door County, Wisconsin
September 02, 2009
We recently were required to put in a new septic system on our vacation property in Door County, WI. This left us with a clearing on our wooded lot where the septic field is now located. The installer...
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Record Last Modified: 2013-09-12
Research By: TWC Staff