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Campanulastrum americanum (American bellflower)
Cressler, Alan

Campanulastrum americanum

Campanulastrum americanum (L.) Small

American Bellflower, Tall Bellflower

Campanulaceae (Bellflower Family)

Synonym(s): Campanula americana, Campanula americana var. illinoensis

USDA Symbol: caam18

USDA Native Status: L48 (N), CAN (N)

A 3-4 ft., erect plant with leafy stems. The upper portion of the stem is lined with showy, lavender-blue, five-petaled flowers. Radially symmetrical, light blue to violet flowers borne singly or in clusters in axils of upper leaves and forming an elongated, spike-like cluster.

In spite of the common name and the genus name, derived from the Latin campana ("bell"), the flowers of this species are usually flat, not bell-shaped as are many others in this family. Tall Bellflower was formerly included in the genus Campanula.


From the Image Gallery

9 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Annual
Habit: Herb
Leaf: Green
Size Class: 3-6 ft.

Bloom Information

Bloom Color: Blue , Purple
Bloom Time: Jun , Jul , Aug


USA: AL , AR , FL , GA , IA , IL , IN , KS , KY , LA , MD , MI , MN , MO , MS , NC , NE , NJ , NY , OH , OK , PA , SC , SD , TN , VA , WI , WV
Canada: NB
Native Distribution: Southern Ont. & NY to MN, s. to GA & LA
Native Habitat: Moist woods; shady streams; thickets

Growing Conditions

Water Use: Medium
Light Requirement: Part Shade
Soil Moisture: Moist
Soil pH: Circumneutral (pH 6.8-7.2)
CaCO3 Tolerance: Medium
Soil Description: Rich, moist soils.
Conditions Comments: Not Available


Use Wildlife: Hummingbirds
Conspicuous Flowers: yes
Attracts: Hummingbirds

Value to Beneficial Insects

Special Value to Native Bees

This information was provided by the Pollinator Program at The Xerces Society for Invertebrate Conservation.


Description: Seeds germinate easily. Shallow plant the small seeds in spring for a biennial plant or fall for an annual.
Seed Collection: Not Available
Seed Treatment: No treatment necessary.
Commercially Avail: yes

Find Seed or Plants

View propagation protocol from Native Plants Network.

National Wetland Indicator Status

This information is derived from the U.S. Army Corps of Engineers National Wetland Plant List, Version 3.1 (Lichvar, R.W. 2013. The National Wetland Plant List: 2013 wetland ratings. Phytoneuron 2013-49: 1-241). Click here for map of regions.

Additional resources

USDA: Find Campanulastrum americanum in USDA Plants
FNA: Find Campanulastrum americanum in the Flora of North America (if available)
Google: Search Google for Campanulastrum americanum


Record Modified: 2017-11-16
Research By: TWC Staff

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