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Physaria fendleri

Fendler's Bladderpod · Lesquerella

Family BrassicaceaeGenus Physaria

Yellow four-petalled flowers with orange veins running into the center, above small leaves felted silver-gray.
FlowerPatrick AlexanderCC0

About the plant

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

Habit
perennialPlants of the World Online
Flower
YellowRead from the photograph on this page
Native range
Arizona, Colorado, Kansas, Mexico Northeast, Mexico Northwest, Mexico Southwest and elsewhereGBIF Backbone Taxonomy

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

Sources: Plants of the World Online — Royal Botanic Gardens, Kew; Read from the photograph on this page — Deno's Garden; GBIF Backbone Taxonomy — Global Biodiversity Information Facility.

Worth knowing

  • Fendler's bladderpod is best known as the richest source of bladderpod oil. The oil can replace castor oil in some uses, and with wider cultivation and better breeding it could be used in cosmetics, coatings and plastics. Wikipedia: Physaria fendleri

This source reports 4 treatments. All are shown.

Protocol 1

DerivedN. C. Deno, 1993

Difficulty Low Rated by us, not by the source.

Start around March 15, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C

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

83% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Lesquerella p. 166Public domain
Show the original text
Lesquerella (Brassicaceae). Six species ( L. fendleri germ. 70(70% in 2-6 d) and 40(41%)-70(14%)-40(5%) for seed DS 6 m at 70 or 40 and 70(83% in 10 d-3 m) and 40(40%)-70(13%) for fresh seed.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Lesquerella p. 166. 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 Low Rated by us, not by the source.

Start around October 2, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on October 1, 2026.

  1. Dry storage

    Duration: 180 days

  2. Sow and cover

    Temperature: 70°F 21°C

about 6 months from start to sowing. Then 6 days to germinate.

70% germination in 2–6 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Lesquerella p. 166Public domain
Show the original text
Lesquerella (Brassicaceae). Six species ( L. fendleri germ. 70(70% in 2-6 d) and 40(41%)-70(14%)-40(5%) for seed DS 6 m at 70 or 40 and 70(83% in 10 d-3 m) and 40(40%)-70(13%) for fresh seed.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Lesquerella p. 166. 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 High Rated by us, not by the source.

Start around September 17, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on September 16, 2026.

  1. Dry storage

    Duration: 180 days

  2. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  3. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

    14 germinated in this phase.

  4. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

    5 germinated in this phase.

Steps after step 2 run on after germination.

about 6 months from start to step 2. Germination happens during step 2; time not stated, 21 days assumed.

41% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Lesquerella p. 166Public domain
Show the original text
Lesquerella (Brassicaceae). Six species ( L. fendleri germ. 70(70% in 2-6 d) and 40(41%)-70(14%)-40(5%) for seed DS 6 m at 70 or 40 and 70(83% in 10 d-3 m) and 40(40%)-70(13%) for fresh seed.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Lesquerella p. 166. 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 4

DerivedN. C. Deno, 1993

Difficulty Moderate Rated by us, not by the source.

Start around March 15, 2027 for a May 3 last frost.

  1. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  2. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

    13 germinated in this phase.

Steps after step 1 run on after germination.

Germination happens during step 1; time not stated, 21 days assumed.

40% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Lesquerella p. 166Public domain
Show the original text
Lesquerella (Brassicaceae). Six species ( L. fendleri germ. 70(70% in 2-6 d) and 40(41%)-70(14%)-40(5%) for seed DS 6 m at 70 or 40 and 70(83% in 10 d-3 m) and 40(40%)-70(13%) for fresh seed.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Lesquerella p. 166. 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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