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Polygonum punctatum


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Polygonum punctatum

Elements of Structural and Systematic Botany

B and T World Seeds' Botanical Glossary

B and T World Seeds' reference number: 40182

Type of plant - annual
Flower or inflorescence: WHITE
Foliage: wet soil, shallow water
Height, in meters: 0.6
Height, in feet: 1.98
Polygonum punctatum sales history

Common names for Polygonum punctatum:

Dotted Smartweed,  Water Smartweed,  Yerba de Burro,  Yerba de Hicotea, 


Polygonum punctatum is included in the following
B and T World Seeds flowering plant categories.

43:   Herbaceous Border Plant Seed List
56:   Aquatic and Semi aquatic Plant Seeds
86:   Natives of U.S.North East
87:   Natives of Central U.S.A.
89:   Natives of U.S.South East
574:  Polygonaceae
719:   North American Native Ethnobotanicals
Including medicinal, dye, fiber, food, construction, ritual


Happier and Healthier Plants, Naturally

plant-fungus communities, for improved nutrition, and disease and drought resistance.


Germination guide for Polygonum punctatum

These notes are a general guide, it is recommended to check specialist literature for some of the more unusual seeds in our lists.
Seed Germination Theory and Practice by Professor Norman C. Deno
Some knowledge about growing from seed is necessary to germinate even the easiest seeds. Most seeds require humidity to germinate, even desert plants like Welwitschia mirabilis require that their growing medium remains moist until germination.

Most seeds require oxygen to germinate, if buried too deep in their growing medium, or if the medium is too wet, the seeds may not get the oxygen they require.
Some seeds need to be in the light (surface sown) or in the dark (sown deep enough to receive little or no light) to germinate. A rule of thumb is to cover the seeds their own width deep in the growing medium, but some seeds prefer to be sown much deeper, and some fairly large seeds like to be surface sown (or higher).
Many seeds germinate best at certain temperatures, some will germinate at a comparatively wide range of temperatures, yet others need fluctuating temperatures.
Almost all seeds are waiting in a dormant state for some outside stimulus to break their dormancy, some just need sufficiently high ambiant humidity, others need scarification, vernalization or to be passed through the intestines of an animal.

Polygonum punctatum seeds will usually germinate in 21-60 days, even under good conditions germination may be erratic.
Sow Polygonum punctatum seeds about 2mm deep in a Peaty seed sowing mix at about 22°C.

Do not overwater


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