Description
Heavenly Blue Morning Glory Seeds 5750.
Our Most Popular Heirloom Climber Producing Sheets of Massive 10 cm Sky-Blue Blooms.
Heavenly Blue Morning Glory (Ipomoea tricolor) is OSC’s most popular morning glory variety, world-renowned for its breathtaking displays of sky-blue flowers. Growing on fast-climbing vines reaching 2 to 4 m in height, this classic heirloom produces massive, trumpet-shaped blossoms measuring 10 cm across—the largest flowers of all morning glory varieties. Blooming early and continuing steadily until autumn frost, Heavenly Blue covers fences, arbours, and trellises in a sea of luminous blue, with fresh flowers opening wide every morning.
Quick Seed Details
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Product Code: 5750
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Botanical Name: Ipomoea tricolor ‘Heavenly Blue’
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Type: Heirloom Climbing Annual
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Height / Length: 2–4 m
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Plant Spacing: Thin to 15 cm apart
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Light Requirement: Full Sun
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Soil Preference: Moist, well-draining garden soil
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Germination: Approx. 14 days (Soak seeds overnight prior to planting)
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Seed Depth: 6 mm deep
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Seed Count: Approx. 25–30 seeds per packet (25 seeds per gram)
What you need to know to Plant & Grow
Morning Glories have hard seed coats and sensitive root systems; soaking seeds prior to direct outdoor sowing yields the highest success.
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Seed Preparation: Soak seeds overnight in warm water for 12 to 24 hours before planting to soften the tough outer coating and accelerate germination.
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Direct Sowing (Recommended): Morning Glories resent root disturbance, so starting seeds indoors offers no real advantage. Direct sow pre-soaked seeds outdoors in mid to late May once soil has warmed and spring frost risks have passed. Sow seeds 6 mm deep and 7.5 cm apart in a sunny location with moist, well-draining soil.
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Germination & Thinning: Seeds will germinate in approximately 2 weeks. Thin young vines to 15 cm apart when they reach 7.5 cm in height.
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Support & Fertilizer Care: Provide a strong trellis, fence, or arbor for vines to climb. In naturally rich garden soil, avoid high-nitrogen fertilizers to prevent rampant leaf growth at the expense of blossoms. In poor soils, apply a balanced, dilute fertilizer regularly to maintain steady vigour and flower output.
Why Heavenly Blue Morning Glory Seeds belong in Your Garden
If you want fast-growing vertical coverage paired with the largest, most vibrant sky-blue flowers available in an annual vine, Heavenly Blue is the undisputed choice. Its easy direct-sowing requirements and reliable, non-stop performance make it an essential favourite for Canadian gardens.
