Ipomoea tricolor Cav.
Morning Glory, Grannyvine
Convolvulus rubrocaeruleus, Ipomoea hookeri, Ipomoea rubrocaerulea, Pharbitis rubrocaeruleus, Quamoclit mutica
Bloom Time: Late spring to early fall
Ipomoea tricolor is an herbaceous annual or perennial, twining liana that grows up to 13 feet (4 m) tall. The leaves are spirally arranged, up to 3 inches (7.5 cm) long with an up to 2.4 inches (6 cm) long petiole. The flowers are trumpet-shaped, up to 4 inches (10 cm) in diameter, most commonly blue with a white to golden yellow center. They open in the morning and last for one day.
How to Grow and Care
Most species have spectacular, colorful flowers and are often grown as ornamentals, and several cultivars have been developed. In the garden, Ipomoeas need moderately fertile, well-drained soil in full sun. Provide shelter from the wind. Prune climbing species in spring. Under glass, provide full light with protection from the hottest sun. Water freely and fertilize monthly during the growing season, but water sparingly in winter. Climbers and trailing species need support. Chip seeds with a knife, scrape with sandpaper or soak in water for 24 hours before sowing at 64° F (18° C) in spring.
Root softwood cuttings of perennials or shrubs in spring or summer, or take semi-ripe cuttings in summer. White blister, rust, fungal leaf spots, stem rot, thread blight, charcoal rot, and wilt can occur. See more at How to Grow and Care for Ipomoea.