Alphabetical Plant Listing

Hydrocotyle verticillata (Water Pennywort)

Whorled Marsh Pennywort, Whorled Pennywort, Water Pennywort


A very fast grower, Hydrocotyle verticillata (Water Pennywort) is a charming trailing perennial with round, penny-shaped leaves, 1-2 in. across (2-5 cm), that attach to their stems from the center of the leaves. The long, slender stems can grow up to 10 in. long (25 cm). Inconspicuous white umbel flowers are borne on shorter stalks below the leaves from early summer to early fall. Native to South and North America as well as the West Indies, Water Pennywort can be found along streams, in the shallow water or marshes, and on low, muddy ground. Popular as a foreground plant, Water Pennywort can be used as a marginal aquatic and is suitable for garden ponds. A vigorous performer, it quickly hides the pond edge. The seeds are used occasionally as food by waterfowl. Undemanding, Water Pennywort can be used in aquaria with a good substrate, and at least moderate light.

  • Grows up to 6-12 in. tall (15-30 cm) and 12-24 in. wide (30-60 cm).
  • Performs best in full sun to light shade in soft, slightly acidic water up to 2 in. (5 cm) below the water surface.
  • No serious pest or disease issues.
  • Propagate by cuttings of rooted stolons.
  • Native to South and North America and the West Indies.

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Requirements

Hardiness 5 – 11
Climate Zones 5, 7, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Plant Type Aquatic Plants, Perennials
Exposure Full Sun, Partial Sun
Season of Interest Spring (Early,Mid,Late)
Summer (Early,Mid,Late)
Fall
Winter
Height 6" – 1' (15cm – 30cm)
Spread 1' – 2' (30cm – 60cm)
Spacing 12" – 24" (30cm – 60cm)
Water Needs High
Maintenance Low
Soil Type Clay, Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Moisture Retentive, Poorly Drained
Characteristics Showy, Evergreen
Native Plants United States, California, Midwest, Missouri, Northeast, Connecticut, Delaware, Massachusetts, Maryland, New Jersey, New York, Rhode Island, Pacific Northwest, Oregon, Southeast, Alabama, Arkansas, Florida, Georgia, Louisiana, Mississippi, North Carolina, South Carolina, Tennessee, Virginia, Southwest, Nevada, Arizona, New Mexico, Oklahoma, Texas
Tolerance Wet Soil
Garden Uses Bog Gardens, Ponds and Streams, Rain Gardens, Water Gardens

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Dinesh Valke, Flickr

While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. The description of these plants has been written based on numerous outside resources.


Requirements

Hardiness 5 – 11
Climate Zones 5, 7, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Plant Type Aquatic Plants, Perennials
Exposure Full Sun, Partial Sun
Season of Interest Spring (Early,Mid,Late)
Summer (Early,Mid,Late)
Fall
Winter
Height 6" – 1' (15cm – 30cm)
Spread 1' – 2' (30cm – 60cm)
Spacing 12" – 24" (30cm – 60cm)
Water Needs High
Maintenance Low
Soil Type Clay, Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Moisture Retentive, Poorly Drained
Characteristics Showy, Evergreen
Native Plants United States, California, Midwest, Missouri, Northeast, Connecticut, Delaware, Massachusetts, Maryland, New Jersey, New York, Rhode Island, Pacific Northwest, Oregon, Southeast, Alabama, Arkansas, Florida, Georgia, Louisiana, Mississippi, North Carolina, South Carolina, Tennessee, Virginia, Southwest, Nevada, Arizona, New Mexico, Oklahoma, Texas
Tolerance Wet Soil
Garden Uses Bog Gardens, Ponds and Streams, Rain Gardens, Water Gardens

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