| 1. | _Evening primrose ( Oenothera biennis ) : Eases premenstrual syndrome.
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| 2. | On the other hand, Oenotheras are hard to pin down.
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| 3. | Oenothera, also called sundrops, is a tough July blooming survivor.
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| 4. | My third Oenothera ( O . biennis ) was an unexpected visitor.
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| 5. | My second Oenothera was also in the mistake category.
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| 6. | My first Oenothera was in the mistake category.
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| 7. | This species is part of the " Oenothera caespitosa " species complex.
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| 8. | If I had a location like that, I would quickly buy this Oenothera again.
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| 9. | In Europe alone there are about 70 introduced species of " Oenothera ".
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| 10. | "Oenothera caespitosa " grows to 10 centimeters ( 4 inches ) tall.
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