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Weed Identification

white panicle aster



Scientific Name

Symphyotrichum lanceolatum ssp. lanceolatum var. lanceolatum

Other Common Names:

lanceleaf aster
panicled aster

Synonyms (former Scientific Names):

Aster bellidiflorus
Aster tenuifolius
Aster lanceolatus
Aster lamarckianus
Aster paniculatus
Aster simplex
Aster laxus
Symphyotrichum simplex


This erect perennial can grow from 2 to 5 ft in height. It flowers from September through November.


The alternate, lanceolate leaves can grow from 3 to 6 inches in length. Each leaf has a pointed tip, and is glaborous on both surfaces. The leaves at the top tend to be smaller than the lower leaves.

Identifying Characteristics

This plant can be differentiated by its 3/4 inch flowers, its hairless lanceolate leaves, and the fine white hairs that occur along its stem.

Flower Seed Head

The white or occasionally pink flowers grow in clusters at the top of the plant, with as many as 25 to 30 flowers per plant. The yellow disk flowers, at the center of each flower and turn reddish purple as they age.

Seed Fruit

The seeds develop in a light brown, flattened achene. Each achene has white or brown tufts of hair that aid in dispersion by wind.

Where Found

This plant can be found in damp meadows, along ponds and rivers, fencerows, ditches, and other low-lying areas.

Life Cycle


Plant Type