How to Grow Hydrocotyle
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Hydrocotyle
Hydrocotyle spp.
herbHydrocotyle, commonly known as water pennywort or Indian pennywort, is a small herbaceous plant with distinctive round or coin-shaped leaves. It grows as a low groundcover or aquatic plant, native to tropical and subtropical regions. This creeping plant is popular in aquariums, terrariums, and as an ornamental groundcover in gardens.
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Example Hydrocotyle timeline · Pittsburgh, PA (Zone 6b)
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Plant Hydrocotyle
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 Hydrocotyle
Around May 17≈ 30 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Hydrocotyle dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in warm zones 10-11; can be grown indoors or in containers in cooler climates
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Get my Hydrocotyle timeline →Growth Stages
Establishment
2-3 weeksYoung plant with 2-4 round leaves emerging; slow initial growth as roots establish
Keep soil consistently moist; provide bright light; maintain 65-75°F temperature; avoid moving frequently
Vegetative Growth
4-8 weeksRunners develop and extend horizontally; leaves multiply along stems; plant begins to fill designated space
Maintain high humidity and consistent moisture; provide bright indirect light; fertilize monthly with dilute liquid fertilizer
Runner Development
Ongoing, 6+ weeksMultiple creeping stems spread across substrate; adventitious roots form at leaf nodes; dense mat forming
Trim back if growth becomes too dense or unruly; ensure good water circulation; continue consistent moisture and light
Flowering (rare in cultivation)
2-4 weeksTiny white or pale green flowers may appear on stems in mature plants; insignificant and easily overlooked
Continue normal care; flowering does not significantly impact plant vigor
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Remove manually; use copper-free snail treatment or introduce snail-eating fish; maintain water quality
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Reduce light duration; perform water changes; improve water circulation; add floating plants to compete for nutrients
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Increase humidity; mist regularly; use neem oil spray if severe; isolate affected plant
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Isolate plant; spray with insecticidal soap or neem oil; wipe leaves with rubbing alcohol
Uses
Traditional Folk Remedy
MedicinalHydrocotyle has been used in Ayurvedic and Traditional Chinese Medicine to support cognitive function and circulation. Some herbalists use it to address skin conditions and inflammatory concerns. [source]
Asian Cuisine Ingredient
CulinaryFresh leaves are used in salads, soups, and herbal drinks in Southeast Asian cuisine, particularly Vietnamese and Thai cooking. The slightly bitter, refreshing taste makes it popular in spring rolls and fresh herb preparations. [source]
Aquarium and Terrarium Plant
HouseholdWidely used in freshwater aquariums, paludariums, and terrariums as a decorative foreground or midground plant. Its trailing growth habit and adaptability make it ideal for planted tank designs. [source]
Indoor Groundcover
OrnamentalServes as an attractive living groundcover in terrariums, plant containers, and indoor tropical gardens. Its low-growing, spreading habit creates a lush, verdant appearance in humid indoor environments. [source]
Aquatic Habitat Plant
WildlifeProvides shelter and foraging areas for small aquatic organisms, fish fry, and invertebrates in ponds and aquariums. Contributes to water oxygenation and nutrient cycling in aquatic systems. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Hydrocotyle is typically not harvested in the traditional sense but rather maintained as a groundcover. Trim back stems as needed to control size and encourage bushier growth. Can be propagated by cutting stems and replanting nodes. In culinary applications, harvest fresh leaves by pinching off stems as needed.
Fun Facts
- 🌱 The name 'pennywort' comes from the distinctive coin-shaped (penny-shaped) leaves that are characteristic of Hydrocotyle species. The leaves are nearly perfectly round and arrange beautifully along the stems.
- 🌱 Hydrocotyle asiática, also known as gotu kola, is revered in traditional Asian medicine and is sometimes called the 'herb of longevity.' It has been used for centuries in Ayurvedic and Chinese herbal practices.
- 🌱 Hydrocotyle can be grown in low-tech aquariums without CO₂ injection, making it one of the easiest aquatic plants for beginners. It's so hardy and easy to propagate that it's often used as a 'starter' plant for new aquascapers.
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