Mendel’s Gardens

Oenothera xylocarpa

Woodyfruit Evening Primrose · Sierra Evening Primrose

Family OnagraceaeGenus Oenothera

About the plant

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

Habit
Perennial, 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 Very high Rated by us, not by the source.

  1. Sow and cover

    Temperature: 70°F 21°C Light: dark

    The rest of the seed soon rotted.

No stated waiting before sowing. Then 21 days to germinate.

4% germination in 21 days.

Two seeds of fifty-four, and the rest rotted. The worst result in the genus.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, OenotheraPublic domain
Show the original text
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. xylocarpa germ. 70D(2/54 in 3rd w). The rest of the seed soon rotted.
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.