Hydrocotyle verticillata
Whorled Pennywort, Whorled Marshpennywort, Shield Pennywort, Water Pennywort
A low-growing semi-aquatic herb with round, glossy leaves on slender stems that look like tiny lily pads. The leaves are peltate, meaning the stem attaches to the centre of the leaf rather than the edge. Native to wetlands across the Americas and parts of Africa, it spreads quickly via stolons and underground runners, forming dense mats of coin-shaped foliage. It grows well submerged in aquaria, emergent in paludariums, or terrestrially in moist closed terrariums.

Care
Prefers very high humidity, bright indirect light, with 4–27 °C, and reaches 15 cm at maturity.
Light
Humidity
Temperature
Soil
Moisture
Soil pH
Propagation
Native range
Native to East Tropical Africa, Southern Africa, Northern South America, Western Indian Ocean, Caucasus, North-Central U.S.A., Northeastern U.S.A., Southwestern U.S.A., South-Central U.S.A., Southeastern U.S.A., Mexico, Central America, Caribbean, Western South America, Brazil, and Southern South America.
Appearance
Growth habit
Leaf shape
Leaf texture
Frequently asked
Can Whorled Pennywort grow in a closed terrarium?
Yes. Whorled Pennywort prefers very high (above 80%) humidity, which is what a closed terrarium provides, and tolerates bright-indirect-light-loving conditions.
Does Whorled Pennywort need drainage?
Whorled Pennywort prefers a wet substrate. Drainage is helpful but not critical; consistent moisture matters more.
What humidity does Whorled Pennywort need?
Whorled Pennywort does best in very high (above 80%) humidity.
Is Whorled Pennywort pet-safe?
Whorled Pennywort is considered non-toxic to common household pets.
How tall does Whorled Pennywort grow?
Whorled Pennywort typically reaches 5–15 cm at maturity.
How do you propagate Whorled Pennywort?
Whorled Pennywort can be propagated by stem cuttings or division or runners.
References
- 1
Kew Plants of the World Online
https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:843759-1 - 2
Wikipedia - Hydrocotyle verticillata
https://en.wikipedia.org/wiki/Hydrocotyle_verticillata - 3
- 4
GBIF - Hydrocotyle verticillata
https://www.gbif.org/species/3034602 - 5
- 6
Go Botany - Native Plant Trust
https://gobotany.nativeplanttrust.org/species/hydrocotyle/verticillata/ - 7
Tropica Aquarium Plants
https://tropica.com/en/plants/plantdetails/Hydrocotyleverticillata(039)/4457 - 8
Fish Laboratory - Care Guide
https://www.fishlaboratory.com/fish/hydrocotyle-verticillata/ - 9
Aquarium Breeder - Care Guide
https://aquariumbreeder.com/whorled-pennywort-care-guide/ - 10
USDA Plants Database
https://plants.usda.gov/plant-profile/HYVE2