Ipomoea purpurea, the common morning-glory, tall morning-glory, or purple morning glory, is a species in the genus Ipomoea, native to Mexico  and Central America. Like all morning glories the plant entwines itself around structures, growing to a height of 2–3 metres (6 ft 7 in–9 ft 10 in) tall. The leaves are heart-shaped and the stems are covered with brown hairs. The flowers are trumpet-shaped, predominantly blue to purple or white, 3–6 centimetres (1.2–2.4 in) diameter. 
The plant is predisposed to moist and rich soil, but can be found growing in a wide array of soil types. It is naturalized throughout warm temperate and subtropical regions of the world. Although it is often considered a noxious weed, Ipomoea purpurea is also grown for its beautiful purple and white flowers and has many cultivars. Common cultivars include I. purpurea 'Crimson Rambler' (red-violet blossoms with white throats), 'Grandpa Ott's,' 'Kniola's Black Knight,' and 'Star of Yelta' (blossoms in varying shades of deep purple with white or pale pink throats) and 'Milky Way' (white blossoms with mauve accents).
Acylated cyanidin glycosides can be isolated from violet-blue flowers of I. purpurea. These anthocyanins were all based on cyanidin 3-sophoroside-5-glucoside, acylated with caffeic acid and/or p-coumaric acid.
Acylated pelargonidin glycosides can be isolated from the red-purple flowers of I. purpurea. The acylated anthocyanins were all based on pelargonidin 3-sophoroside-5-glucoside, acylated with caffeic acid and/or glucosylcaffeic acid.
Ipomoea purpurea in Loganville, Georgia
- USDA Plants Profile
- "BSBI List 2007". Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-01-25. Retrieved 2014-10-17.
- "Ipomoea purpurea". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 22 January 2016.
- Fang, Zhou (2013-01-12). "Tracing the Geographic Origins of Weedy Ipomoea purpurea in the Southeastern United States". Journal of Heredity. 104 (5). PMID 23894192. doi:10.1093/jhered/est046. Retrieved 2016-08-30 – via Oxford Journals.
- Germplasm Resources Information Network: Ipomoea purpurea
- Richard H. Uva, Joseph C. Neal and Joseph M. Ditomaso, Weeds of The Northeast, (Ithaca, NY: Cornell University Press, 1997), Pp. 214-217.
- Charles Savage, Willis W. Harman and James Fadiman, Ipomoea purpurea: A Naturally Occurring Psychedelic
- Norio Saito, Fumi Tatsuzawa, Kyoko Yoda, Masato Yokoi, Kichiji Kasahara, Shigeru Iida, Atsushi Shigihara and Toshio Honda (November 1995). "Acylated cyanidin glycosides in the violet-blue flowers of Ipomoea purpurea". Phytochemistry. 40 (4): 1283–1289. doi:10.1016/0031-9422(95)00369-I.
- Norio Saito; Fumi Tatsuzawa; Masato Yokoi; Kichiji Kasahara; Shigeru Iida; Atsushi Shigihara; Toshio Honda (December 1996). "Acylated pelargonidin glycosides in red-purple flowers of Ipomoea purpurea". Phytochemistry. 43 (6): 1365–1370. doi:10.1016/S0031-9422(96)00501-8.
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