Mendel’s Gardens

Oenothera pallida

Pale Evening Primrose

Family OnagraceaeGenus Oenothera

About the plant

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

The plant

Habit
Biennial, Perennial, Forb/herb
Height
2.0 ft
Flower
White
Blooms
Late Spring
Native range
Canada, lower 48 states

Growing conditions

Sun
Shade tolerance: High
Moisture
Moisture use: Low

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. Then 21 days to germinate.

Germinates in 21 days.

Deno says well. 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. pallida germ. well in 3rd w 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.