How to Grow Houttuynia
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Houttuynia
Houttuynia cordata
herbHouttuynia is a semi-aquatic perennial herb native to Asia, known for its distinctive heart-shaped leaves and unique aromatic properties. The plant produces small white flowers with red bracts and thrives in moist to wet conditions. It's valued both as a culinary herb in Asian cuisine and as an ornamental groundcover.
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Example Houttuynia timeline · Pittsburgh, PA (Zone 6b)
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Plant Houttuynia
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 Houttuynia
Around May 17≈ 30 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Houttuynia dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 5-10, with best performance in zones 6-9
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Establishment
2-3 weeksYoung plants developing root systems and initial leaf growth. Plants appear sparse with small heart-shaped leaves.
Keep soil consistently moist, provide partial shade, protect from strong wind. Monitor for transplant stress.
Vegetative Growth
4-8 weeksRapid stem and leaf expansion. Plants fill in and create dense groundcover. Foliage becomes vibrant; variegated varieties show distinct coloring.
Maintain consistent moisture, pinch back stems to encourage bushier growth, apply balanced liquid fertilizer monthly.
Flowering
6-10 weeksSmall white flowers appear on red or pink bracts, typically rising above foliage. Blooms may be subtle but add ornamental interest.
Continue regular watering, deadhead spent flowers to encourage more blooms, thin stems if growth becomes too dense.
Harvest/Maturity
Ongoing through growing seasonPlant reaches full size as dense, lush groundcover. Foliage remains attractive year-round in mild climates. Leaves are ready for harvesting at full maturity.
Begin selective harvesting of outer leaves and stems. Cut no more than one-third of plant at a time to maintain vigor.
Dormancy (Cold Climates)
3-4 monthsIn zones 5-7, foliage dies back or becomes dormant in winter. Roots survive underground and regrow in spring.
In cooler zones, mulch heavily around base or bring container plants indoors. Cut back dead foliage in early spring.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Increase humidity, spray with water, use neem oil if severe. Ensure adequate moisture as mites thrive in dry conditions.
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Spray with strong water stream, apply insecticidal soap, or use neem oil. Introduce natural predators like ladybugs.
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Remove by hand, use copper tape barriers, encourage natural predators, apply diatomaceous earth around plants.
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Improve air circulation, avoid overhead watering, apply sulfur or potassium bicarbonate fungicide if needed.
Uses
Asian cooking and flavoring
CulinaryHouttuynia leaves have a unique, pungent flavor with notes of citrus and coriander. Widely used in Vietnamese, Thai, and Chinese cuisines as a fresh herb in salads, soups, and spring rolls, or cooked as a vegetable. [source]
Traditional herbal remedies
MedicinalUsed in traditional Chinese and Ayurvedic medicine to support respiratory health, immunity, and digestion. Houttuynia contains bioactive compounds and is consumed as tea or herbal supplement. [source]
Natural deodorizing properties
HouseholdThe herb has antimicrobial and deodorizing qualities, making it useful for natural cleaning preparations and foot care. Can be dried and used in sachets or prepared as infusions. [source]
Decorative groundcover and water garden plant
OrnamentalParticularly the variegated 'Chameleon' variety is prized as an ornamental with striking foliage patterns. Excellent for bog gardens, pondside plantings, and moist containers. [source]
Support for pollinators and beneficial insects
WildlifeThe flowers attract bees and other beneficial pollinators while being suitable for planted areas near water features. Provides habitat and food sources for water garden ecosystems. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Harvest leaves and tender stems year-round once plant is established. Pinch or cut stems 2-3 inches from the tip for culinary use. For maximum flavor, harvest in morning after dew dries. Can be harvested continuously without harming the plant, which encourages bushier growth. Fresh leaves are best used immediately; can be dried by hanging bundles in shade for 1-2 weeks.
Fun Facts
- 🌱 Houttuynia is nicknamed 'fish mint' or 'Chinese lizard tail' because of its pungent, slightly fishy aroma when leaves are crushed, which can smell either pleasant or off-putting depending on personal preference.
- 🌱 The variegated variety 'Chameleon' displays remarkable color-changing leaves that shift from green to red, yellow, and cream depending on light exposure and temperature, making it a living decorative element.
- 🌱 In its native range throughout Southeast Asia, houttuynia has been used for over 2,000 years in traditional medicine and is considered a folk remedy for a wide array of ailments from wound healing to respiratory support.
Gardening Terms
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