‘Mailbox Mix’ Heirloom Morning Glory Seeds

Morning Glory - Mailbox Mix - Ipomoea tricolor Annual - This heritage blend combines flowers of deep, rich blue and pearly white that open fresh each morning. Although each individual bloom lasts only one day, new flowers unfurl continuously and buds continue opening over a week in a vase. Seeds like these were carried across the prairies by pioneer families, transplanting a bit fo home to far-flung homesteads. Traditionally, these old-fashioned climbing vines with heart shaped leaves and glowing blossom trumpets adorned fences or mailboxes.

Mix Details

• Botanical name: Ipomoea tricolor
• Plant type: Annual
• Growth habit: Vining
• Crop category: Flower seed
• Flower character: Annual - This heritage blend combines flowers of deep, rich blue and pearly white that open fresh each morning.
• Recorded feature: Good Cut Flower
• Product format: Seed packet

Sowing & Growing

• Soil Temperature: above 50°F
• Planting Depth: 1/2"
• Germination: 7-10 Days
• Height At Maturity: 8-10 feet
• Sun/Shade: Full Sun
• Spacing After Thinning: 6-8"

Prepare a weed-reduced seedbed for ‘Mailbox Mix’ Heirloom Morning Glory and use the recorded planting season, depth, and light requirements. Press shallow-sown seed into good soil contact and keep the seed zone from drying during establishment. Thin or transplant only when the growth habit and spacing call for it. Leave enough room for mature width and air movement. Bloom timing and final height can shift with sowing date, climate, soil, moisture, and competition, so use listed figures as planning ranges.

Erect well-anchored supports at least 8 feet tall in a wind sheltered area; strong netting or a sturdy trellis serve well to hold these vigorous climbers.

Morning glories will bloom hard in mid-summer once days begin to shorten.

Planting & Growing: To Start Indoors: In late spring, once weather is warm and settled and nights stay above 50°F, plant seeds in a sunny spot in ordinary garden soil 2 - 3" apart and 1/2" deep.

Firm soil over seeds and keep evenly moist but not soggy while awaiting germination.

To Start Early Indoors: Sow indoors 4 - 5 weeks before last expected frost in individual pots of seed starting mix.

Because this packet contains a mix, component proportions and the number of varieties visible in a small planting will vary. Emergence, growth rate, mature size, color, and harvest or bloom timing can also differ among components and with site conditions. Evaluate the planting across the full season rather than assuming the first seedlings, flowers, or harvest represent the entire mix.

Explore related options in our Flower Seeds.