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Morning Glory Seeds Heavenly Blue

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USDA Hardiness Planting Zones

To determine if a plant is sufficiently cold hardy, the USDA created numbered zones indicating winter low temperatures; the lower the zone number the colder the winter.

  • If the coldest winter temperature expected in your area is -15°F (zone 5) then any plants rated zones 3-5 will survive the winter temperatures in your area.
  • If you live in very warm winter areas (zones 9-11) plants with zones 3-4 ratings are not recommended. The lack of freezing winter temperatures do not provide a time for winter dormancy (rest).

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Morning Glories are fast-growing, vigorous climbing vines with profuse, brightly colored blooms. This variety produces sky blue, funnel-shaped flowers with a tinge of yellow in the throat.

Provide a sturdy trellis, pergola or other support for the vines, which get large — and heavy — by the middle of the summer. Vines grow up to 15′ tall.

Further Reading:

  • Wildflower Seed Planting Instructions
  • Safe Seed Pledge
  • The Wildflowers of the Northeast
  • FAQs About Wildflowers and Wildflower Meadows
  • How much seed do I need?
  • Late Fall and Winter Planting Times
  • View All Wildflower Planting Guides

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This is the big blue hybrid. Not really wild, but we have many requests for this seed. Great for fences. Annual.

Heavenly Blue

Quick Facts:

    • NOT the invasive weed
    • Copious, intensely blue flowers
    • Flowers fade to pink in evening
    • Trumpet shaped flowers
    • Heirloom annual

Heavenly Blue

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Description:

Ipomoea tricolor. It is a great shame that so many gardeners confuse this tidy heirloom annual with the invasive weed Convovulus arvensis. Both share the name Morning Glory, and both have trumpet shaped flowers, but the similarities end there. Heavenly Blue morning glory seeds produce short vines bearing copious, huge, intensely blue flowers that open each morning and then fade to pink before closing for good in the evening. Every day more flowers open from mid to late summer. It looks spectacular climbing along a fence or trellis, with really large flowers that can only be described as Heavenly Blue.

Note: This variety is not an invasive weed.

Quick Facts:

    • NOT the invasive weed
    • Copious, intensely blue flowers
    • Flowers fade to pink in evening
    • Trumpet shaped flowers
    • Heirloom annual

How To Grow

It’s a shame that so many gardeners confuse this annual morning glory with the invasive weed, Convovulus arvensis, because this variety will not take over your garden. Instead, it will produce a lush abundance of big, intensely blue flowers from midsummer on. Follow this handy How to Grow Morning Glories from seeds and you will be delighted with these amazing blooms.

Latin
lpomoea tricolor
Family: Convovulaceae

Difficulty
Easy

Season & Zone
Exposure: Full sun
Zone: 3-8

Timing
Direct sow where they are to grow 1-2 weeks after last frost. This would be mid to late April on the coast. You can try sowing some indoors in peat or coir pots 3-4 weeks before last frost, but they do not transplant well. If starting indoors, chip the seeds and soak them in warm water for 24 hours, and then provide a constant soil temperature of 21-30°C (70-85°F). The seeds should sprout in 5-21 days, but may be longer outdoors. Be patient.

Starting
Sow seeds 5mm (¼”) deep. Space or thin to 30-45cm (12-18″) between plants.

Growing
Make sure to provide some support for these tall vines to climb up. Moist, well drained soil that is not too nitrogen-rich is ideal. Excess nitrogen leads to large, bush vines with fewer flowers. Dry soil is tolerated. Pinch the tips of the plants as soon as you see them start to climb in order to produce branching growth.

Note: This variety is not an invasive weed.

[description action=”end”][quickfacts action=”start quickfacts”]

  • NOT the invasive weed
  • Copious, intensely blue flowers
  • Flowers fade to pink in evening
  • Trumpet shaped flowers
  • Heirloom annual

[quickfacts action=”end quickfacts”]”>

Plant some climbing Ipomoea tricolor, or Heavenly Blue morning glory seeds for huge, intensely blue flowers that fade to pink before closing. Tidy annual.