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Summary

Physical Characteristics

Callitriche hermaphroditica is an evergreen Perennial growing to 0.3 m (1ft).
See above for USDA hardiness. It is hardy to UK zone 6. It is in leaf all year, in flower from May to September, and the seeds ripen from August to October. The species is monoecious (individual flowers are either male or female, but both sexes can be found on the same plant) and is pollinated by Water.
It is noted for attracting wildlife.
Suitable for: light (sandy), medium (loamy) and heavy (clay) soils. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils. It cannot grow in the shade. It can grow in water.

UK Hardiness Map US Hardiness Map

Synonyms

C. autumnalis. L.

Plant Habitats

Pond;

Edible Uses

None known

References More on Edible Uses

Medicinal Uses

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None known

References More on Medicinal Uses

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Other Uses

None known

Special Uses

Attracts Wildlife

References More on Other Uses

Cultivation details

A water plant, it should be allowed to root into the soil at the bottom of the pond or be grown in a pot in the pond[200]. This species is an excellent oxygenator of the water and a good food source for fish[1, 200]. It provides a good habitat for wildlife in the pond, the leaves holding spawn well[1]. This species belongs to one of only two known dicot genera where pollination taks place under water[274]. Plants remain active all winter[1].

References Carbon Farming Information and Carbon Sequestration Information

Temperature Converter

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Plant Propagation

Seed - we have no details on this species but would suggest that the seed will be best sown in a greenhouse as soon as it is ripe in a pot standing in about 5cm of water. It is quite likely that the seed has a short viability, especially if it is allowed to become dry. When large enough to handle, prick the seedlings out into individual pots and grow them on in trays of water in the greenhouse for at least their first winter, planting them out into their permanent positions in late spring or early summer, after the last expected frosts. Cuttings can be taken at any time in the growing season. They root easily, even if just placed in a pot of water.

Other Names

If available other names are mentioned here

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Found In

Countries where the plant has been found are listed here if the information is available

Weed Potential

Right plant wrong place. We are currently updating this section. Please note that a plant may be invasive in one area but may not in your area so itâ€™s worth checking.

Conservation Status

IUCN Red List of Threatened Plants Status :

Related Plants

Latin Name	Common Name	Habit	Height	Hardiness	Growth	Soil	Shade	Moisture	Edible	Medicinal	Other
Callitriche palustris	Common Waterwort, Vernal water-starwort	Perennial	0.3	0-0		LMH	N	Wa	1	0

Growth: S = slow M = medium F = fast. Soil: L = light (sandy) M = medium H = heavy (clay). pH: A = acid N = neutral B = basic (alkaline). Shade: F = full shade S = semi-shade N = no shade. Moisture: D = dry M = Moist We = wet Wa = water.

Callitriche hermaphroditica - L.