B & T World Seeds
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If seeds of
Heracleum sphondylium
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The average, annual, minimum temperature zone where Heracleum sphondylium is cold hardy
USDA Zone:6
-10° to 0°F (-23.5° to -18°C)
Approximately 100.00 seeds per gram
seed-counts are only a guide, not to be used for accurate calculations.
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