Moonflower (Ipomoea alba)

Moonflower

Ipomoea alba

Its large, fragrant blooms open at dusk like luminous white saucers. Night-blooming flowering vine; common names: moonflower, tropical white morning glory.

Full sun
1–2/week
Moderate
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Plant Needs

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Sunlight Requires full sun to partial shade, with at least 6 hours of direct sunlight daily to support abundant night-blooming; protect from intense midday sun in extremely hot climates
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Watering Water deeply when the top 2–3 cm of soil feels dry; avoid overwatering to prevent root rot, as the vine is susceptible to waterlogged conditions
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Temperature Thrives in warm, tropical to subtropical temperatures; cannot tolerate frost, so move indoor or provide frost protection if temperatures drop below 15°C
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Characteristics

  • Leaf: Heart-shaped, glossy green foliage, 10–20 cm long with pointed tips and smooth margins
  • Flower: Trumpet-shaped white blooms, 10–15 cm wide, sweetly fragrant, opening at dusk and closing by mid-morning
  • Stem: Slender, herbaceous twining stems with fine, soft hairs for anchoring to supports
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Care Guide

Watering

Keep soil consistently moist but not waterlogged; increase watering frequency during hot, dry spells

Fertilization

Apply diluted balanced liquid fertilizer every 2 weeks to support blooming. Avoid over-fertilizing, as excessive nitrogen can reduce flower production

Banana peel compost tea:Compost banana peels for 2–3 weeks, steep in water for 24 hours, dilute the tea 1:20 with water, and apply as a root drench to avoid leaf burn
Pruning
  • Trim overgrown or tangled vines in early spring to encourage new, vigorous growth and maintain a tidy shape
  • Deadhead spent blooms regularly to promote continuous flowering throughout the growing season
  • Remove yellowing or damaged foliage to improve airflow and reduce the risk of fungal diseases
  • Cut back vines by one-third in late autumn if growing in temperate regions to prepare for overwintering
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA confirmed toxic; contains tropane alkaloids that may cause vomiting, diarrhea, lethargy, dilated pupils, and tremors

Humans: Ingestion of plant material may cause nausea, vomiting, and abdominal discomfort due to tropane alkaloids

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Garden Uses & Culture

Culture: Symbolizes nocturnal beauty, fleeting romance, and the quiet magic of moonlit gardens

Usage: Ornamental climbing vine for trellises, arbors, and container gardens; fragrant night-blooming accent for evening outdoor spaces