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R.A. Howard @ USDA-NRCS PLANTS Database |
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| USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. 3 vols. Charles Scribner's Sons, New York. Vol. 1 |
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Summary
Physical Characteristics
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Vallisneria americana is an evergreen Perennial.
See above for USDA hardiness. It is hardy to UK zone 9. It is in leaf all year, in flower from July to September. The species is dioecious (individual flowers are either male or female, but only one sex is to be found on any one plant so both male and female plants must be grown if seed is required). and is pollinated by Water. The plant is not self-fertile.
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
V. gigantea. Gaertn.
Plant Habitats
Pond;
Edible Uses
Edible Parts: Leaves
Edible Uses:
Young leaves - cooked[105, 177].
References More on Edible Uses
Medicinal Uses
Plants For A Future can not take any responsibility for any adverse effects from the use of plants. Always seek advice from a professional before using a plant medicinally.
None known
References More on Medicinal Uses
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Other Uses
References More on Other Uses
Cultivation details
A water plant for a large aquarium or for deep water outdoors[1], it prefers slightly acid conditions in a sunny position[200]. This species is not very hardy in Britain, though it should succeed outdoors in the mildest areas of the country[200]. A valuable water oxygenator[200]. The leaves can be up to 1 metre long[1]. Dioecious, male and female plants must be grown if seed is required. Male flowers are produced below the surface of the water and females are produced on the surface. Fertilization takes place when male flowers break off the plant, float to the surface and fall into a slight depression formed by the female flowers on the surface of the water[274].
References Carbon Farming Information and Carbon Sequestration Information
Temperature Converter
Type a value in the Celsius field to convert the value to Fahrenheit:
Fahrenheit:
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Plant Propagation
Seed - we have no information on this species but suggest sowing the seed in a warm greenhouse as soon as it is ripe. Lay the seed on the surface of a pot of soil and immerse this in water. When they are large enough to handle, prick the seedlings out into individual pots and grow them on in water in the greenhouse for their first winter. Plant them out into their permanent positions in late spring or early summer, after the last expected frosts. Division of rooted runners in the growing season.
Other Names
If available other names are mentioned here
Native Range
NORTHERN AMERICA: Canada (Québec, Nova Scotia, Ontario, New Brunswick, Manitoba), United States (Indiana, Maine, Massachusetts, Michigan, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, West Virginia, Connecticut, Iowa, Minnesota, Missouri, South Dakota, Illinois, Wisconsin, Oregon (northwest), Washington (southwest), Alabama, Delaware, District of Columbia, Florida, Georgia, Kentucky, Louisiana, Maryland, North Carolina, South Carolina, Virginia, Mississippi, Tennessee, Texas, Nevada (south)), Mexico (Tamaulipas, Campeche, México, Morelos, Quintana Roo, Tabasco, Veracruz de Ignacio de la Llave) SOUTHERN AMERICA: Cuba, Dominican Republic, Haiti, Guatemala, Honduras, Venezuela
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 it’s worth checking.
Conservation Status
IUCN Red List of Threatened Plants Status :
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.
Expert comment
Author
Michx.
Botanical References
200204270
Links / References
For a list of references used on this page please go here
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Subject : Vallisneria americana
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