Plant library · Annual Flowers
Ipomoea purpurea
Morning glory is a fast-growing annual vine that turns a trellis, fence panel, or other open support into a tall seasonal screen. Its trumpet flowers appear from early summer into early fall, while the twining growth can reach about 10 feet high and 3 feet wide. Use it where vertical growth is welcome and can be kept separate from lower plantings and everyday access routes.
Give morning glory a dedicated support at the back or side of a bed, beside a fence, or along a structure with enough height for its long climb. Set the support before planting so the young stems can begin winding upward rather than across neighboring plants. A narrow trellis can add seasonal privacy or soften a bare vertical surface without claiming a broad strip of ground, but leave a reachable edge for guiding stems and clearing spent growth.[1][2]
Plant on 18-inch centers along the base of a continuous support. Each vine can spread about 3 feet at maturity, so this spacing creates a connected cover rather than a series of isolated plants. Keep the planting line at least a foot or two behind low edging plants or a path edge, allowing foliage to drape and stems to be redirected without narrowing circulation.
Reserve a full-sun position for the strongest seasonal display. Provide moderate water while plants establish and maintain evenly available moisture during dry stretches rather than relying on a cramped, hard-to-reach strip behind the support. A well-drained planting area suits this vine, including ordinary garden soils that do not stay waterlogged.[1][2]
This vine occupies its support for one growing season, flowering from early summer into early fall. Treat the trellis line as a changing seasonal feature: it is open in spring, densely green and flowering through summer, then ready for removal after the annual growth finishes. Leave enough access at the base to pull vines down cleanly and replant the area the following year.
Morning glory can self-seed readily, so avoid placing it where seedlings would be difficult to notice or remove, such as within dense mixed borders or along unmanaged fence lines. Give it a defined support and inspect nearby open soil for volunteer plants as the season progresses. This is especially useful where the vine borders neighboring beds, paths, or naturalized areas.[1]
Editorial content updated 2026-07-20.