Oenothera cheiranthifoliaBeach Evening PrimroseFamily OnagraceaeGenus OenotheraProtocolDerivedN. C. Deno, 1993Difficulty Low Rated by us, not by the source.1Sow and coverTemperature: 70°F 21°C No stated waiting before sowing. Germination time not stated; 21 days assumed.Deno says immediately, and gives no count.