How to Grow ʻAnapanapa
ʻAnapanapa
Ruellia brittoniana
shrubʻAnapanapa is a spreading perennial shrub native to Mexico and naturalized throughout Hawaii and the Pacific tropics. It produces delicate purple, pink, or white flowers and thrives in warm, dry environments. The plant is drought-tolerant and often considered invasive in some regions due to its aggressive spreading habit.
When should you plant ʻAnapanapa in your zone?
Get a personalized planting timeline — when to start seeds, transplant, and harvest — based on your USDA zone and local frost dates. Free to start.
Example ʻAnapanapa timeline · Pittsburgh, PA (Zone 6b)
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Plant ʻAnapanapa
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 ʻAnapanapa
Around Jun 16≈ 60 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact ʻAnapanapa dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Zones 10-11, thrives in tropical and subtropical climates
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Get my ʻAnapanapa timeline →Growth Stages
Germination & Seedling
2-3 weeksSeeds germinate in 7-14 days with warm soil. Seedlings develop first true leaves within 2-3 weeks.
Keep soil lightly moist but not waterlogged. Provide bright light. Thin seedlings to prevent crowding.
Vegetative Growth
4-6 weeksPlant develops multiple stems and oval-shaped green leaves arranged oppositely. Bushy growth pattern emerges.
Water moderately, allow soil to dry between waterings. Pinch growing tips to encourage branching. No fertilizer needed in poor soil.
Blooming
4-6 months or continuous in ideal conditionsPlant produces abundant flowers intermittently throughout warm season. Flowers open in morning, close by afternoon.
Reduce watering slightly to promote flowering over foliage. Monitor for pests attracted to flowers. Deadheading extends blooming period.
Seed Development & Maturation
3-4 weeks after floweringFlowers fade and develop small seed capsules. Seeds mature to brown capsules that split when dry.
Allow some flowers to remain for seed production if desired. Collect mature capsules before they split. Control spread by removing seed heads if invasiveness is a concern.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Spray with water to dislodge; use insecticidal soap or neem oil if severe. Increase humidity.
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Use yellow sticky traps, spray with horticultural oil or insecticidal soap. Remove heavily infested leaves.
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Remove with alcohol-dipped cotton swabs, spray neem oil, encourage natural predators like ladybugs.
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Improve drainage, reduce watering frequency, avoid overwatering. Remove affected plants if severe.
Uses
Traditional Hawaiian medicine preparation
CulinaryʻAnapanapa flowers and leaves have been traditionally used in Hawaiian folk remedies, though specific compounds require further research. [source]
Cut flowers and arrangements
HouseholdThe delicate, colorful flowers are suitable for fresh floral arrangements and add tropical beauty to home interiors. [source]
Pollinator garden enhancement
WildlifeFlowers attract butterflies, bees, and other beneficial pollinators, making it valuable for supporting local ecosystems. [source]
Lei and flower crafting
CraftIn Hawaiian culture, ʻanapanapa flowers are traditionally used in lei-making and other flower crafts. [source]
Traditional herbal applications
MedicinalNative peoples have traditionally used various parts of Ruellia species for their purported anti-inflammatory and therapeutic properties, though scientific validation is ongoing. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Flowers can be cut for arrangements when fully open in morning. Harvest seed pods when they turn brown and begin to split naturally. Cut stems for propagation anytime during growing season and root in moist sand or soil.
Fun Facts
- 🌱 ʻAnapanapa flowers are ephemeral, opening in the morning and closing by afternoon, a characteristic called nyctinasty.
- 🌱 The plant is considered invasive in some Pacific islands due to its ability to spread rapidly via seeds and underground runners, making it important to manage in certain regions.
- 🌱 The name 'ʻanapanapa' is Hawaiian and reflects the plant's long history of use and cultural significance in the Hawaiian Islands.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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