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Polygonum pensylvanicum L.
Pennsylvania smartweed, Pink Smartweed
USDA Symbol: pope2
USDA Native Status: Native to U.S.
Dense, erect, spike-like clusters of small, bright pink flowers are on sticky-haired stalks.
About 75 species of smartweeds occur in North America. They are mainly are identified by their spikes of numerous flowers and encircling leaf sheaths. A closely related species, Pale Smartweed (P. lapathifolium), has white or pale rose, arching flower spikes and usually smooth stems. Both are found in gardens as well as in damp waste places. The seeds of these plants are eaten by songbirds and waterfowl. There are also climbing species of smartweeds.
Plant CharacteristicsDuration: Annual Habit: Herb Leaf:
Bloom InformationBloom Color: Red , Pink
Bloom Time: Mar , Apr , May
AL , AR , AZ , CA , CO , CT , DC , DE , FL , GA , IA , IL , IN , KS , KY , LA , MA , MD , ME , MI , MN , MO , MS , MT , NC , ND , NE , NH , NJ , NM , NV , NY , OH , OK , OR , PA , RI , SC , SD , TN , TX , VA , VT , WI , WV , WY Canada: NB
, PE Native Distribution:
Throughout East, except Prairie Provinces; also in parts of West. Native Habitat:
Moist waste places, fields. USDA Native Status: L48(N), AK(N), CAN(N)
Growing ConditionsWater Use: Medium
Light Requirement: Sun
Soil Moisture: Moist
CaCO3 Tolerance: Medium
BenefitConspicuous Flowers: yes
From the National Organizations Directory
According to the species list provided by Affiliate Organizations, this plant is either on display or available from the following:
Fredericksburg Nature Center
- Fredericksburg, TXNative Seed Network
- Corvallis, OR
Herbarium Specimen(s)NPSOT 0847
Collected Apr 29, 1994 in Bexar County by Harry CliffeNPSOT 0898
Collected Jun 24, 1994 in Bexar County by Harry Cliffe
Wildflower Center Seed BankLBJWC-1354
Collected 2014-10-05 in Hays County by Lady Bird Johnson Wildflower Center
Recommended Species Lists
Find native plant species by state. Each list contains commercially available species suitable for gardens and planned landscapes. Once you have selected a collection, you can browse the collection or search within it using the combination search.
View Recommended Species page
Record Modified: 2012-12-09
Research By: TWC Staff