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Polygonum cuspidatum

Elements of Structural and Systematic Botany

B and T World Seeds' Botanical Glossary

B and T World Seeds' reference number: 51298

The average, annual, minimum temperature zone where Polygonum cuspidatum is cold hardy
USDA Zone:4 -30° to -20°F   (-34.5° to -29°C)
Type of plant - deciduous shrub
Flower or inflorescence: CREAM-WHITE, in 9cm.panicles
Fruit: 3 sided achene, 4mm.
Foliage: broad ovate, to 12x10cm.
Height, in meters: 2
Height, in feet: 6.60
Polygonum cuspidatum seeds may be subject to seasonal availability

Synonyms (alternative names) for Polygonum cuspidatum:
Fallopia japonica, 

Common names for Polygonum cuspidatum:

Itadori,  Japanese Fleeceflower,  Japanese Knotweed,  Mexican Bamboo,  Pan chang, 

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

2:   Wants
We are looking for seeds from this plant, if you know where we can find seeds or would like to be told when we have a source, please let me know.
40:   Shrub Seed List, Hardy and Tender
50:   Japanese Native and Introduced Plants
51:   Chinese Native and Introduced Plants
574:  Polygonaceae

Happier and Healthier Plants, Naturally

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

Germination guide for Polygonum cuspidatum

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

Do not overwater

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