How to Grow Wailaleale Dubautia
Wailaleale Dubautia
Dubautia waialealae
shrubDubautia waialealae is a rare endemic Hawaiian shrub found only on the slopes of Mount Waialeale on the island of Kauai. This small to medium shrub is part of the diverse Dubautia genus, which represents one of the most spectacular examples of adaptive radiation in Hawaiian plants. It typically grows in wet forest environments and is adapted to the extremely wet, mountainous conditions of its native habitat.
When should you plant Wailaleale Dubautia in your zone?
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Example Wailaleale Dubautia timeline · Pittsburgh, PA (Zone 6b)
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Plant Wailaleale Dubautia
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 Wailaleale Dubautia
Late summer into fallBefore the first fall frost (≈ Nov 8)
Sample dates for Pittsburgh, PA. Sign up to get exact Wailaleale Dubautia dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in warm tropical and subtropical zones (10b-11); requires consistent moisture and protection from extreme heat
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Get my Wailaleale Dubautia timeline →Growth Stages
Establishment
4-8 weeksYoung plant recovering from transplant shock with minimal new growth
Keep in humid conditions, maintain consistent moisture, avoid fertilizing for first 4-6 weeks. Place in bright, indirect light.
Vegetative Growth
Several months to 1 yearPlant develops new stems and foliage; becomes bushier with increasing leaf production
Maintain high humidity and consistent moisture. Provide balanced, diluted liquid fertilizer every 4-6 weeks during growing season. Prune gently to encourage branching if desired.
Maturation
1-3 yearsPlant reaches desired size with full foliage; established root system
Continue regular watering and misting. Fertilize monthly with balanced fertilizer diluted to half strength. Reduce nitrogen to encourage more compact growth if needed.
Flowering
2-4 weeks (varies by conditions)Small, delicate flowers appear along stems; typically yellow or pale colored
Maintain consistent moisture and humidity during bloom. Reduce nitrogen slightly to encourage flowering. Avoid moving plant frequently.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Increase humidity through misting; use neem oil spray if infestation occurs; ensure adequate air circulation
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Remove with cotton swab dipped in alcohol; treat with insecticidal soap; improve air circulation
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Prune affected branches; treat with horticultural oil; inspect regularly
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Ensure good air circulation; avoid wetting foliage excessively at night; use fungicide if powdery mildew appears
Uses
Hawaiian Native Plant Conservation
WildlifeDubautia waialealae serves as an important endemic species for Hawaiian native plant conservation efforts and restoration of Kauai's montane wet forests. Growing this species helps preserve a critical component of Hawaii's unique and threatened biodiversity. [source]
Ornamental Landscaping
CraftThis attractive shrub makes an excellent specimen plant for tropical and subtropical gardens, particularly in humid microclimates. Its delicate flowers and native appeal make it valuable for culturally-significant Hawaiian-themed gardens. [source]
Terrarium and Greenhouse Cultivation
HouseholdDubautia waialealae thrives in controlled environments like terrariums, conservatories, and greenhouses where high humidity and temperature can be maintained. It is particularly suitable for serious plant collectors interested in rare Hawaiian flora. [source]
Native Bird and Pollinator Support
WildlifeThis native Hawaiian plant provides food and habitat for native Hawaiian birds and insects. Its flowers attract pollinators adapted to Hawaiian flora, supporting the broader ecosystem of endemic species. [source]
Harvest Tips
This is an ornamental shrub, not typically harvested. Collect seeds from mature flowers if propagating. Remove dead flowers and branches to maintain plant health and shape.
Fun Facts
- 🌱 Dubautia waialealae is found only on Mount Waialeale on Kauai, one of the wettest spots in Hawaii, making it exceptionally rare and difficult to cultivate outside its native habitat.
- 🌱 The Dubautia genus represents one of the most remarkable examples of adaptive radiation in Hawaiian plants, with over 20 species evolved from a single colonizing ancestor, each adapted to different ecological niches across the Hawaiian Islands.
- 🌱 This species is part of the silversword alliance (Madiinae), a Hawaiian plant group that evolved to exploit a wide range of habitats from dry volcanic slopes to the dripping wet mountains, representing over 50 species of extraordinary botanical diversity.
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