How to Grow Jacquemontia
Jacquemontia
Jacquemontia pentanthos
vineJacquemontia is a delicate, fast-growing tropical vine known for its small, vibrant blue morning glory-like flowers that bloom prolifically throughout warm seasons. Native to the Caribbean and Central America, this ornamental climber adds elegant vertical interest to gardens and is sometimes called Blue Shade Vine. It thrives in warm, humid conditions and is often grown as an annual in temperate climates.
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Example Jacquemontia timeline · Pittsburgh, PA (Zone 6b)
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Plant Jacquemontia
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 Jacquemontia
Around Jun 16≈ 60 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Jacquemontia dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Zones 10-11; can be grown as an annual in zones 9 and warmer
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Seedling
2-3 weeksSmall heart-shaped leaves emerge; vine begins producing thin tendrils
Keep soil warm (70-80°F) and consistently moist; provide bright indirect light; thin seedlings to prevent crowding
Vegetative Growth
4-6 weeksRapid vine extension with increasingly dense foliage; vigorous production of climbing stems and aerial rootlets
Provide sturdy support structure; fertilize every 2-3 weeks with balanced or slightly nitrogen-rich fertilizer; pinch back occasionally to encourage bushiness
Flowering
6-12 weeks (or longer in ideal conditions)Small, bright blue 5-petaled flowers (sometimes with white centers) appear profusely along the vine; blooms open in morning and close by afternoon
Maintain consistent moisture and regular fertilizing; deadhead spent flowers to encourage continuous blooming; ensure adequate sunlight for maximum flower production
Peak Production
Ongoing during warm seasonDense vine covered with continuous waves of blue flowers; abundant small round seed capsules form after pollination
Monitor for pests and diseases in humid conditions; continue regular watering and feeding; provide afternoon shade in extremely hot climates to prevent stress
Senescence/Dormancy
Variable, begins when temperatures drop below 60°FGrowth slows as temperatures drop; flowering decreases; vine may die back or become semi-dormant in cool climates
Reduce watering and fertilizer; trim back dead or weak growth; in frost-prone areas, cut back plant or bring container plants indoors before first frost
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Spray with water to dislodge; use neem oil or miticide if severe; maintain humidity to deter
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Use yellow sticky traps; spray with insecticidal soap or neem oil; remove heavily infested leaves
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Hand-pick if few; use Bt (Bacillus thuringiensis) for heavy infestations; encourage natural predators
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Scrape off by hand; spray with horticultural oil; use neem oil for crawlers
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Remove with rubbing alcohol on cotton swab; spray with insecticidal soap or neem oil
Uses
Floral garnish
CulinaryThe delicate blue flowers can be used as an edible garnish for salads, desserts, and beverages, adding visual appeal and a subtle floral note to dishes. [source]
Vertical garden and landscape design
HouseholdJacquemontia is excellent for covering trellises, arbors, pergolas, and fences, creating living walls of blue flowers that add color and texture to outdoor spaces. [source]
Cut flower arrangements
CraftThe delicate blue flowers are suitable for fresh floral arrangements and can add a tropical, cottage garden aesthetic to indoor displays. [source]
Pollinator support
WildlifeThe abundant small flowers attract bees, butterflies, and hummingbirds, making Jacquemontia an excellent choice for supporting pollinator populations in warm-climate gardens. [source]
Traditional Caribbean medicine
MedicinalIn its native regions, Jacquemontia has been used in traditional remedies for various ailments, though scientific validation is limited and use should be under expert guidance. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Jacquemontia is grown for ornamental flowers rather than harvest; cut stems for fresh arrangements anytime during the flowering period; collect seed pods in late summer/fall if you want to save seeds for next season (allow pods to dry on vine, then collect and store in cool, dry place)
Fun Facts
- 🌱 Jacquemontia flowers open in the morning and close by afternoon, following a typical morning glory pattern; this behavior is called nyctinasty or sleep movements
- 🌱 The plant is named after French naturalist and botanist Victor Jacquemont (1801-1832), who explored India and collected important botanical specimens
- 🌱 In tropical regions, Jacquemontia can bloom year-round if temperatures remain above 60°F, making it a prolific and nearly continuous source of blue flowers for nine months or more
Gardening Terms
New to gardening? Learn about terms used in this guide:
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