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Schizopetalon walkeri

Almond-scented Split-petal Cress

Family BrassicaceaeGenus Schizopetalon

Two white flowers whose petals are cut into narrow ragged fingers, on thin green stems against dark wood.
Flower阿橋 HQCC BY-SA 2.0

About the plant

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

Habit
annualPlants of the World Online
Flower
WhiteRead from the photograph on this page
Native range
Chile CentralGBIF 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.

Two sources report 6 treatments between them. All are shown.

Protocol 1

DerivedN. C. Deno, 1998

Difficulty Low Rated by us, not by the source.

Start around September 10, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on September 9, 2026.

  1. Dry storage

    Duration: 180 daysTemperature: 70°F 21°C

  2. Cold moist stratification

    Temperature: 40°F 4°C Light: either

about 6 months from start to step 2. Germination happens during step 2, in 28 days.

100% germination in 28 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Schizopetalon p. 61Public domain
Show the original text
Schizopetalon (Brassicaceae). S. walkeri data is now complete. Seeds germ. 70(100% in 2-14 d) for seeds DS either 6 m or 1 y and 40(100% in 4th w) for seeds DS 6 m. Light had no effect. Seeds DS 2 y germ. 70D(15% on 4th d) indicating extensive dying.
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Schizopetalon p. 61. 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, 1998

Difficulty Low Rated by us, not by the source.

Start around March 23, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on March 22, 2026.

  1. Dry storage

    Duration: 180–365 daysTemperature: 70°F 21°C

  2. Sow and cover

    Temperature: 70°F 21°C Light: either

about 12 months from start to sowing. Then 14 days to germinate.

100% germination in 2–14 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Schizopetalon p. 61Public domain
Show the original text
Schizopetalon (Brassicaceae). S. walkeri data is now complete. Seeds germ. 70(100% in 2-14 d) for seeds DS either 6 m or 1 y and 40(100% in 4th w) for seeds DS 6 m. Light had no effect. Seeds DS 2 y germ. 70D(15% on 4th d) indicating extensive dying.
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Schizopetalon p. 61. 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, 1998

Difficulty High Rated by us, not by the source.

Start around April 2, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on April 1, 2025.

  1. Dry storage

    Duration: 730 daysTemperature: 70°F 21°C

  2. Sow and cover

    Temperature: 70°F 21°C Light: dark

about 2 years from start to sowing. Then 4 days to germinate.

15% germination in 4 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Schizopetalon p. 61Public domain
Show the original text
Schizopetalon (Brassicaceae). S. walkeri data is now complete. Seeds germ. 70(100% in 2-14 d) for seeds DS either 6 m or 1 y and 40(100% in 4th w) for seeds DS 6 m. Light had no effect. Seeds DS 2 y germ. 70D(15% on 4th d) indicating extensive dying.
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Schizopetalon p. 61. 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, 1996

Difficulty Moderate Rated by us, not by the source.

Start around March 22, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C Light: dark

No stated waiting before sowing. Then 14 days to germinate.

56% germination in 3–14 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Schizopetalon p. 76Public domain
Show the original text
Schizopetalon (Brassicaceae). S. walkeri germ. 70D(56% in 3-14 d), 70L(28% in 4-20 d), and 40(10% in 4th w).
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Schizopetalon p. 76. 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 5

DerivedN. C. Deno, 1996

Difficulty High Rated by us, not by the source.

Start around March 16, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C Light: light

No stated waiting before sowing. Then 20 days to germinate.

28% germination in 4–20 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Schizopetalon p. 76Public domain
Show the original text
Schizopetalon (Brassicaceae). S. walkeri germ. 70D(56% in 3-14 d), 70L(28% in 4-20 d), and 40(10% in 4th w).
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Schizopetalon p. 76. 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 6

DerivedN. C. Deno, 1996

Difficulty High Rated by us, not by the source.

Start around March 8, 2027 for a May 3 last frost.

  1. Cold moist stratification

    Temperature: 40°F 4°C

Germination happens during step 1, in 28 days.

10% germination in 28 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Schizopetalon p. 76Public domain
Show the original text
Schizopetalon (Brassicaceae). S. walkeri germ. 70D(56% in 3-14 d), 70L(28% in 4-20 d), and 40(10% in 4th w).
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Schizopetalon p. 76. 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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