Summary ⁷

Common tansy (Tanacetum vulgare l.) is a perennial, herbaceous plant also commonly known as bitter buttons, cow bitter, or golden buttons. It is native to Europe, but can be found throughout the United States. It has numerous yellow flowers found in flat-topped, dense clusters. It can grow 1.5-6 feet tall and typically flowers from July to September. The foliage emits a strong odor when crushed.

Source:
https://www.colorado.gov/pacific/agconservation/common-tansy
http://www.cwma.org/CommonTansy.html

Identification ⁷

Height: 1 1/2 - 6 feet tall
Flowers: yellow, 1/4 - 1/2 inch wide, numerous, button-like, w/o petals, flat-topped dense clusters. Flower in June-September
Stems: Purplish-red, branched near the top
Leaves: Alternate, 1-6 inches wide, 2-12 inches long, deeply and pinnately divided into narrow leaflets
Fruit: Seeds are yellowish brown achenes with short, five-toothed crowns
Toxic: Yes, toxic in large quantities but livestock often will not eat it because it is very unpalatable
Root: woody rhizomes
Other: foliage emits a strong odor when crushed

Source:
https://www.colorado.gov/pacific/agconservation/common-tansy
http://www.cwma.org/CommonTansy.html

Origin / Habitat ⁷

Common tansy is native to Europe ans was introduced as an ornamental and medicinal plant. It prefers full sun and fertile, well-drained soil. It is commonly found on roadsides, stream banks, irrigation ditch banks, waste places, ornamental beds, and pastures.

Source:
https://www.colorado.gov/pacific/agconservation/common-tansy
http://www.cwma.org/CommonTansy.html

Sources and Credits

1. (c) Kingsbrae Garden, some rights reserved (CC BY-NC-SA), http://www.flickr.com/photos/32598399@N00/1175159336
2. (c) Andreas Rockstein, some rights reserved (CC BY-SA), https://www.flickr.com/photos/74738817@N07/35869224452/
3. (c) Jonathan (JC) Carpenter, some rights reserved (CC BY-NC), uploaded by Jonathan (JC) Carpenter
4. (c) Fabelfroh, some rights reserved (CC BY-SA), http://commons.wikimedia.org/wiki/File:Tanacetum_vulgare_blatt.jpeg
5. Pavel Šinkyřík, no known copyright restrictions (public domain), https://www.biolib.cz/IMG/GAL/102491.jpg
6. Pavel Šinkyřík, no known copyright restrictions (public domain), https://www.biolib.cz/IMG/GAL/102492.jpg
7. (c) Colorado Parks and Wildlife, some rights reserved (CC BY-SA)

More Info

• iNat taxon page
• African Plants - a photo guide
• Atlas of Living Australia
• Biodiversity Heritage Library
• BOLD Systems BIN search
• Calflora
• CalPhotos
• eFloras.org
• Flora Digital de Portugal
• Flora of North America (beta)
• Global Biodiversity Information Facility (GBIF)
• Go Botany
• HOSTS - a Database of the World's Lepidopteran Hostplants
• IPNI (with links to POWO, WFO, and BHL)
• Jepson eFlora
• Maryland Biodiversity Project
• NatureServe Explorer 2.0
• NBN Atlas
• New Zealand Plant Conservation Network
• OregonFlora.org
• SEINet Symbiota portals
• Tropicos
• USDA PLANTS database
• VASCAN by Canadensys
• World Flora Online
• 日本のレッドデータ検索システム
• 植物和名−学名インデックス YList

iNat Map