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Rudbeckia hirta My Joy golden information page
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Rudbeckia hirta My Joy golden
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The average, annual, minimum temperature zone where Rudbeckia hirta My Joy golden is cold hardy
USDA Zone:4 -30° to -20°F (-34.5° to -29°C)
Approximately 1800.00 seeds per gram
seed-counts are only a guide, not to be used for accurate calculations.
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