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Oenothera elata Hooker evening primrose

Previous scientific name(s): Oenothera hookeri

 

Formerly known as Oenothera hookeri. Moderate water requirement; full sun to partial shade; biennial. Yellow flowers bloom June to September along open slopes, roadsides, moist lowlands, and streams from valleys to mountains; can grow quite tall.

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Species Attributes

Height:

36 - 48 in.

Life Form:

Biennial

Native or Introduced:

Native

Season:

Sun & Shade Tolerance:

granite seed sun and shade tolerance icon granite seed sun and shade tolerance icon

Elevation:

Precipitation:

Low - Moderate

Soil Texture
Coarse:

Not Adapted

Moderately Coarse:

Average

Medium:

Best

Moderately Fine:

Average

Fine:

Not Adapted

Soil pH
Acidic:

Marginal

Neutral:

Best

Basic:

Marginal

Seeding Rate:

1 PLS lbs/Acre

Pure Seed per Bushel:

36.40 lbs.

Seeds per Pound:

1,300,000

Germination Time:

Days

Blooming Season:

Summer

Mycorrhizal Dependent:

Yes

Bloom Color:

Yellow

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