Morning Glory (Heavenly Blue)

📖 About This Plant

Morning Glory (Heavenly Blue) is one of the most iconic annual vines in gardening, producing large, vivid sky-blue trumpet flowers up to 4 inches across that unfurl fresh each morning from midsummer to frost. Growing in zones 3–10 as a fast-maturing annual, it can climb 10–15 feet in a single season on trellises, fences, pergolas, or mailboxes. The intense, pure sky-blue color of Heavenly Blue is exceptionally rare in the plant world, and the flowers are briefly but unmistakably perfumed. Easy to direct-sow and nearly indestructible once established, it's often one of the first vines recommended to new gardeners. Self-seeds reliably in zones 7+ for naturalized re-emergence each year.

📊 Quick Facts

📅 When to Plant in Your Area

🌱 Care Tips

Direct sow Heavenly Blue morning glory seeds after last frost (or start indoors 4–6 weeks early in peat pots to avoid transplant shock). Nick seeds with a file or soak overnight in warm water to break the hard seed coat and ensure good germination. Plant in full sun in average to poor, well-drained soil — rich soil produces lush vines with few flowers. Provide a trellis, strings, or fence immediately at planting. Water regularly until established, then moderately. Do not fertilize with nitrogen-heavy products; this promotes leaves over flowers. Deadhead spent flowers for a longer season or allow some to set seed. Morning glory can be invasive — deadhead all spent flowers if growing near natural areas to prevent unwanted spread.

🤝 Companion Plants

These plants grow well alongside Morning Glory:

🌿 Related Flower

More flower that grow in similar conditions:

❓ Frequently Asked Questions