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Oenothera lindheimeri

Lindheimer's Beeblossom · Lindheimer's Clockweed · White Guara

Family OnagraceaeGenus Oenothera

White flowers with four spoon-shaped petals held to one side, their long stamens tipped with yellow anthers, on a hairy stem.
FlowerDidier DescouensCC BY-SA 4.0

About the plant

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

The plant

Habit
Herbaceous Perennial, WildflowerExtension Gardener Plant Toolbox
Habit
perennialPlants of the World Online
Height
3-5 ft0.9-1.5 mExtension Gardener Plant Toolbox
Spread
1-2 ft30-60 cmExtension Gardener Plant Toolbox
Flower
Pink, WhiteExtension Gardener Plant Toolbox
Blooms
Fall, SummerExtension Gardener Plant Toolbox
Native range
Louisiana, TexasGBIF Backbone Taxonomy
Hardiness zones
5-9Extension Gardener Plant Toolbox

Growing conditions

Sun
Full sun; Partial ShadeExtension Gardener Plant Toolbox
Soil
Clay, Loam (Silt), SandExtension Gardener Plant Toolbox
Soil pH
Acid (<6.0)Extension Gardener Plant Toolbox
Moisture
Good Drainage, MoistExtension Gardener Plant Toolbox

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

Sources: Extension Gardener Plant Toolbox — NC State Extension; Plants of the World Online — Royal Botanic Gardens, Kew; GBIF Backbone Taxonomy — Global Biodiversity Information Facility.

Worth knowing

This source reports three treatments. All are shown.

Protocol 1

DerivedN. C. Deno, 1993

Difficulty Low Rated by us, not by the source.

Start around March 24, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C Light: dark

No stated waiting before sowing. Then 12 days to germinate.

100% germination in 8–12 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Gaura p. 145Public domain
Show the original text
Gaura (Onagraceae). G. lindheimeri germ. 70D(100% in 8-12 d), 40-70(100%) and 100% in April in outdoor treatment. Light had no effect. There were 80% empty seed coats.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Gaura p. 145. 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.

Protocol 2

DerivedN. C. Deno, 1993

Difficulty Moderate Rated by us, not by the source.

Start around December 15, 2026 for a May 3 last frost.

  1. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C Light: either

  2. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C Light: either

about 3 months from start to step 2. Germination happens during step 2; time not stated, 21 days assumed.

100% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Gaura p. 145Public domain
Show the original text
Gaura (Onagraceae). G. lindheimeri germ. 70D(100% in 8-12 d), 40-70(100%) and 100% in April in outdoor treatment. Light had no effect. There were 80% empty seed coats.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Gaura p. 145. 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.

Protocol 3

DerivedN. C. Deno, 1993

Difficulty Low Rated by us, not by the source.

  1. Sow outdoors and leave it

    Up in April.

No stated waiting before sowing.

100% germination.

This source doesn't state how long step 1 lasts.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Gaura p. 145Public domain
Show the original text
Gaura (Onagraceae). G. lindheimeri germ. 70D(100% in 8-12 d), 40-70(100%) and 100% in April in outdoor treatment. Light had no effect. There were 80% empty seed coats.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Gaura p. 145. 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.

How each step is done, in Deno’s words, and what Verified and Derived mean.

Germination trials

Readers’ own records of sowing this species, published after review. Share your trial · All trials

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