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Wildflower Center Seed Bank

The Wildflower Center's Seed Bank was established in partnership with the Bureau of Land Management's (BLM) Seeds of Success (SOS) program in concert with the Royal Botanic Gardens, Kew Millennium Seed Bank Program (MSBP). The purpose of the Seed Bank is to collect, conserve, and develop native plant materials for stabilizing, rehabilitating and restoring lands in Texas and the United States.

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To request seed from the Wildflower Seed Bank, please contact the Seed Bank Curator.


Ambrosia trifida var. texana

Ambrosia trifida L. var. texana Scheele

Texan Great Ragweed, Giant Ragweed

Asteraceae (Aster Family)

Accession Data

Accession Number: LBJWC-MM-707

Field Data Form:
Collection Date: 2009-11-16
Accession Number: LBJWC-MM-707
Collection Number: MM-707
Organization: LBJWC
Collector(s): Lady Bird Johnson Wildflower Center
Collected with: Marr, M.

Location Data

Country: US
State: Texas
County: Hays
Location: Riparian corridor along the Blanco River between File Mile Dam and Post Road; accessed from Randall W. Vetter Park which is located on Old Stagecoach Road between San Marcos and Kyle.

Latitude: 29.937880
Longitude: -97.896360
Georeference Source: GPS
GPS Datum: WGS84

Altitude: 580 FT
Elevation in M: 176

Habitat Data

Associated Taxa: Platanus occidentalis, Acer negundo, Cephalanthus occidentalis, Sesbania herbacea, Panicum virgatum
Slope: 2%
Aspect: S
Geology: Limestone
Soil Texture: Gravelly loam, gray

Collection Data

Plants Sampled: 150 plants sampled.
Population Size: 500
Specimen Notes: Marr, M. - LBJWC:In field:12/18/2005

Inventory Data

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