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Physostegia virginiana Rose Queen information page
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all the sublists (specialist catalogues) Physostegia virginiana Rose Queen is included in,
some description and snippits of information.
The average, annual, minimum temperature zone where Physostegia virginiana Rose Queen is cold hardy
USDA Zone:4 -30° to -20°F (-34.5° to -29°C)
Approximately 600 seeds per gram
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