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Helleborus orientalis Ritas Black information page
germination advice, shopping cart,
all the sublists (specialist catalogues) Helleborus orientalis Ritas Black is included in,
some description and snippits of information.
The average, annual, minimum temperature zone where Helleborus orientalis Ritas Black is cold hardy
USDA Zone:6
-10° to 0°F (-23.5° to -18°C)
Approximately 115 seeds per gram
seed-counts are only a guide, not to be used for accurate calculations.
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