Blue Dawnflower (Ipomoea indica): Vigorous Vine with Color-Shifting Blooms

Blue dawnflower (Ipomoea indica), also called oceanblue morning glory or island morning glory, is a vigorous, perennial vine with heart-shaped leaves and large, funnel-shaped flowers that open bright blue, fade to pinkish-purple, and close by afternoon. It blooms from late spring to frost.

Growth

Can climb 20–30 feet in a season. Very aggressive—can smother other plants. In frost-free zones (9–11), it is perennial; elsewhere, grown as an annual. Considered invasive in some regions.

Culture

Full sun; well-drained soil. Water regularly. Provide strong support. Deadhead to reduce self-seeding. Prune hard in winter.

Taxonomy

• Family: Convolvulaceae
• Genus: Ipomoea
• Species: indica
• Synonyms: Convolvulus acuminatus, Convolvulus indicus, Ipomoea acuminata, Ipomoea cathartica, Ipomoea congesta