Mendel’s Gardens

Oenothera albicaulis

Whitest Evening Primrose · Prairie Evening Primrose

Family OnagraceaeGenus Oenothera

About the plant

What it is and where it grows — not part of any germination protocol.

Habit
Annual, Forb/herb
Native range
Native to the lower 48 states

Toxicity is noted only where a source states it. No note here is not a finding of safety.

Source: PLANTS Database — USDA NRCS.

Protocol

DerivedN. C. Deno, 1993

Difficulty Low Rated by us, not by the source.

  1. Sow and cover

    Temperature: 70°F 21°C

No stated waiting before sowing. Germination time not stated; 21 days assumed.

Deno says immediately, and gives no count.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, OenotheraPublic domain
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Oenothera (Onagraceae). While many species germ. well in dark treatments, 0. biennis has an absolute light requirement so that photorequirements have to be considered in this genus. 0. albicaulis germ. immediately at 70.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Oenothera. Quoted exactly. Every value on this card comes from this record, except the difficulty rating, which is ours; the step names come from a fixed list.