How to Grow Coastal Morning Glory
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Coastal Morning Glory
Ipomoea brasiliensis
vineCoastal morning glory is a vigorous, heat-loving perennial vine native to tropical and subtropical regions. It produces vibrant purple-pink funnel-shaped flowers that open in the morning and close by afternoon. This salt-tolerant species thrives in coastal environments and sandy soils where many other plants struggle.
When should you plant Coastal Morning Glory in your zone?
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Example Coastal Morning Glory timeline · Pittsburgh, PA (Zone 6b)
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Plant Coastal Morning Glory
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest Coastal Morning Glory
Around Jun 16≈ 60 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Coastal Morning Glory dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 9b-11; grown as annual in cooler zones
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Germination & Seedling
1-2 weeksSeeds sprout and first true leaves emerge; plant is delicate and low-growing
Keep soil consistently moist but not waterlogged. Provide warmth (70-80°F). Protect from strong winds.
Vegetative Growth
3-6 weeksVigorous vine growth with heart-shaped leaves; no flowers yet
Establish trellis or support structure early. Water moderately. Begin light fertilizing every 2-3 weeks with balanced fertilizer.
Flowering
8-12 weeks or until frostMorning glory flowers open in early morning in shades of purple-pink; flowers close by afternoon
Maintain consistent watering. Reduce nitrogen fertilizer to encourage more blooms. Deadhead spent flowers to encourage continuous flowering.
Seed Pod Development
2-3 weeks per podAfter flowers close, small round seed pods develop if flowers are pollinated
Allow some pods to mature if you want to collect seeds for next season. Remove excess pods to redirect energy to more flowers.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Spray with insecticidal soap or neem oil; encourage natural predators like ladybugs; strong water spray to dislodge insects
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Increase humidity; spray with water; use sulfur dust or miticide if severe
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Remove by hand with rubbing alcohol on stems; treat with horticultural oil spray
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and
Hand-pick larger larvae; use Bt (Bacillus thuringiensis) for heavy infestations; encourage parasitic wasps
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Spray with insecticidal soap; dab with rubbing alcohol; improve air circulation to prevent infestations
Uses
Coastal Landscaping & Salt Tolerance
OrnamentalCoastal morning glory is exceptionally salt-tolerant, making it ideal for seaside gardens and coastal properties where salt spray damage affects most plants. Use it to cover fences, trellises, or arbors in beach communities and near salt-affected soils. [source]
Pollinator Support
WildlifeThe bright purple-pink flowers attract bees, butterflies, and hummingbirds, providing valuable nectar sources in warm months. The plant supports local pollinator populations in coastal and tropical gardens. [source]
Fast-Growing Living Screen
CraftIts vigorous vining growth makes it excellent for quickly creating privacy screens or covering unsightly structures. New growth covers substantial areas within a single growing season. [source]
Traditional Ethnobotanical Uses
MedicinalSome Ipomoea species have been used in traditional medicine in tropical regions, though coastal morning glory specifically is primarily valued as ornamental. Research local traditional uses with caution. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Coastal morning glory is ornamental, not harvested for food. Collect seed pods in late summer when they turn brown and dry; store seeds in cool, dry conditions for up to 2 years. For propagation, soak seeds in warm water for 24 hours before planting to improve germination.
Fun Facts
- 🌱 Morning glories have a specialized circadian rhythm where flowers open in early morning and close by afternoon, with the process regulated by light and temperature cues.
- 🌱 Coastal morning glory can grow up to 10-15 feet in a single season under ideal warm conditions, making it one of the fastest-growing ornamental vines.
- 🌱 The plant's salt tolerance comes from specialized cellular mechanisms that allow it to thrive in sandy coastal soils where salt spray and salt-laden soil would kill most garden plants.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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