Wildflowers of the United States | |||||||||||||||||||
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Diodia virginiana - Virginia Buttonweed, Large Buttonweed, Poor Joe. There are 8 species of Diodia - Buttonweed - found in the United States, although only four of these are found in the "states proper" - the other 4 species are found in the U.S. Territories of Puerto Rico and the Virgin Islands. Two species found on the mainland are native to the United States - Diodia teres (common names Rough Buttonweed and Poor Joe,) and this species – Virginia Buttonweed, Diodia virginiana. | While this plant is officially listed as Threatened or Endangered in Indiana and New Jersey, it also is considered a weed by some authorities, and I can attest to its weediness, with the example here photographed in an area it had taken over in a small garden patch we had. It is noteworthy, however, that it was subsequently pushed out by the much more aggressive non-native invasive Ground Ivy (Glechoma hederacea.) Virginia Buttonweed is a branching, sprawling plant with opposite leaves. Found in: AL, AR, CT, DE, FL, GA, IL, IN, KS, KY, LA, MD, MO, MS, NC, NJ, OH, OK, PA, SC, TN, TX, VA, WV Leave comments on Diodia virginiana at this link.   Blue=Native; Grey=Introduced Map from USDA Plants Database: USDA, NRCS. 2017. The PLANTS Database (http://plants.usda.gov, 16 Jan 2025). National Plant Data Team, Greensboro, NC 27401-4901 USA. Search Our Database: Enter any portion of the Scientific, Common Name, or both. Do a general Google search of the entire site:  Follow USWildflowers on Twitter
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