Asia-Temperate
Eastern Asia: Japan - Honshu, - Kyushu, - Ryukyu Islands, - Shikoku
Pacific
North-Central Pacific: United States - Hawaii
Northwestern Pacific: Guam; Micronesia; Northern Mariana Islands
South-Central Pacific: French Polynesia
Southwestern Pacific: Fiji; Tonga
Herbaceous climber/vine in forests/coastal habitats/disturbed sites, annual or perennial in California, but listed as perennial more often. It is a vigorous, rapidly growing, perennial vine climbing up to 12 m in trees or spreading across the ground. I. indica is an opportunistic coloniser of open, disturbed habitats. Under favourable conditions of full sun, ample moisture and fertile soil it can grow very rapidly, smothering all other vegetation. Its climbing habit enables it to compete successfully with trees and shrubs on the edges of forests and along riparian zones. Its rapidly growing stolons can form dense mats over the ground. Once established, it produces large numbers of flowers for most of the year. New flowers open each day fading to pink by late afternoon. Specimens may live for up to 25 years
Introduced as a garden ornamental and is known as a regular naturalised escape throughout the tropical world. Blue morning glory (Ipomoea indica) has been widely cultivated as a garden ornamental, and can still often be seen growing in gardens in coastal districts.