Tropical White Morning-Glory

Ipomoea alba

Native to:
Argentina, Bahamas, Belize, Bolivia, Brazil, Central American Pacific Is., Colombia, Costa Rica, Cuba, Dominican Republic, El Salvador, French Guiana, Galápagos, Guatemala, Guyana, Haiti, Honduras, Jamaica, Leeward Is., Mexico, Nicaragua, Panamá, Paraguay, Peru, Puerto Rico, Suriname, Trinidad-Tobago, United States, Uruguay, Virgin Islands, Windward Is.

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Convolvulaceae
Genus:
Ipomoea
Species:
Ipomoea alba
USDA Symbol:
IPAL

Growth Characteristics

Life Cycle:
Annual
Growth Habit:
Forb/herb , Vine
Height:
900 cm
Light Requirements:
Full Sun
Drought Tolerance:
Medium
Bloom Months:
jun,jul,aug,sep,oct
Bloom Colors:
white

Wildlife Benefits

Caterpillars:
★☆☆☆☆ Recorded caterpillar host plant (HOSTS Database)

Host Plant for Caterpillars

Pink-spotted hawk moth (Agrius cingulata), Virginia Tiger Moth (Spilosoma virginica), Yellow-striped armyworm (Spodoptera ornithogalli)

Reported Fauna Sightings

Moths:Lantanophaga pusillidactylus, Pink-spotted hawk moth (Agrius cingulata)

Garden & Ecology Notes

Wildlife Value:
sphinx moths, nocturnal pollinators
Fragrant:
Yes

Soil Requirements

Soil Type:
rich, well-drained loamy soil
pH:
5.5 - 7.5 (slightly acidic to neutral)
Drainage:
excellent drainage required
Moisture:
consistently moist
Notes:
prefers fertile soils in tropical regions

Propagation & Germination

Stratification:
None required
Scarification:
Seed coat scarification required before sowing
Germination Time:
5–21 days
Notes:
Scarify or soak seeds 24 hours in warm water before planting. Requires warm soil temperatures (70-85°F) for best germination.

The above propagation data sourced from Claude AI

ORGHPS Germination Guide: Sow @ 20C. Germinates within 3 months. Requires scarification. | Requires soaking 24-48 hrs; discard floaters.

Source: Ontario Rock Garden & Hardy Plant Society