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Iris aucheri

Aucher-Eloy Iris

Family IridaceaeGenus Iris

Several white irises with yellow crests standing in dry stony ground below low hills
FlowerAnas A. EmadCC BY-SA 4.0

About the plant

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

Habit
tuberous geophytePlants of the World Online
Flower
White, pale blue, dark blueWikipedia
Native range
Iran, Iraq, Lebanon-Syria, Palestine, Transcaucasus, TürkiyeGBIF 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; Wikipedia — Wikipedia contributors; GBIF Backbone Taxonomy — Global Biodiversity Information Facility.

Worth knowing

  • The Aucher-Éloy iris is one of the Juno irises, with several flowers per plant, and has gained the RHS Award of Garden Merit. Wikipedia: Iris aucheri

This source reports 5 treatments. All are shown.

Protocol 1

DerivedN. C. Deno, 1993

Difficulty High Rated by us, not by the source.

Start around March 26, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on March 25, 2025.

  1. Dry storage

    Duration: 180 daysTemperature: 70°F 21°C

  2. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

  3. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  4. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

  5. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  6. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

    2/15 germinated in this phase.

  7. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  8. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

  9. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  10. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

  11. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  12. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

    4/15 germinated in this phase.

Steps after step 8 run on after germination.

about 2 years from start to step 8. Germination happens during step 8; time not stated, 21 days assumed.

53% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Juno p. 162Public domain
Show the original text
Juno (lridaceae). This genus has been separated from Iris, and this separation is adopted here. Germination can extend over periods as long as 4 y and probably more. Treatment with GA-3 has not as yet initiated germination. J. aucheri germ. 70-40(1/12)-70-40(3/12)-70-40-70(1/12) and 40-70(2/12)-40- 70-40-70-40(1/12). After eight more cycles the seed remained firm and alive. One seed germ. after 4 y and another after 6 y. Both were healthy, IDS m at 70 germ. 70-40(1/9)-70-40(1/9)-70(1/9) and 40-70-40(1/9)-70-40(1/9). Seed DS 6 m at 40 germ. 70-40-70-40-70(2/15)-40-70(8/15)-40-70-40-70(4/15). There seems to be no pattern or T preference to these extended germinations.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Juno p. 162. 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 High Rated by us, not by the source.

Start around June 19, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on June 18, 2026.

  1. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

  2. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

    1/12 germinated in this phase.

  3. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

  4. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  5. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

  6. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  7. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

    1/12 germinated in this phase.

Steps after step 4 run on after germination.

about 9 months from start to step 4. Germination happens during step 4; time not stated, 21 days assumed.

25% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Juno p. 162Public domain
Show the original text
Juno (lridaceae). This genus has been separated from Iris, and this separation is adopted here. Germination can extend over periods as long as 4 y and probably more. Treatment with GA-3 has not as yet initiated germination. J. aucheri germ. 70-40(1/12)-70-40(3/12)-70-40-70(1/12) and 40-70(2/12)-40- 70-40-70-40(1/12). After eight more cycles the seed remained firm and alive. One seed germ. after 4 y and another after 6 y. Both were healthy, IDS m at 70 germ. 70-40(1/9)-70-40(1/9)-70(1/9) and 40-70-40(1/9)-70-40(1/9). Seed DS 6 m at 40 germ. 70-40-70-40-70(2/15)-40-70(8/15)-40-70-40-70(4/15). There seems to be no pattern or T preference to these extended germinations.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Juno p. 162. 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 December 15, 2026 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

  3. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  4. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

  5. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  6. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

  7. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

    1/12 germinated in this phase.

Steps after step 2 run on after germination.

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

17% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Juno p. 162Public domain
Show the original text
Juno (lridaceae). This genus has been separated from Iris, and this separation is adopted here. Germination can extend over periods as long as 4 y and probably more. Treatment with GA-3 has not as yet initiated germination. J. aucheri germ. 70-40(1/12)-70-40(3/12)-70-40-70(1/12) and 40-70(2/12)-40- 70-40-70-40(1/12). After eight more cycles the seed remained firm and alive. One seed germ. after 4 y and another after 6 y. Both were healthy, IDS m at 70 germ. 70-40(1/9)-70-40(1/9)-70(1/9) and 40-70-40(1/9)-70-40(1/9). Seed DS 6 m at 40 germ. 70-40-70-40-70(2/15)-40-70(8/15)-40-70-40-70(4/15). There seems to be no pattern or T preference to these extended germinations.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Juno p. 162. 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 High Rated by us, not by the source.

Start around March 21, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on March 20, 2026.

  1. Dry storage

    Duration: 180 daysTemperature: 40°F 4°C

  2. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  3. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

  4. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  5. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

  6. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

    1/9 germinated in this phase.

Steps after step 4 run on after germination.

about 12 months from start to step 4. Germination happens during step 4; time not stated, 21 days assumed.

11% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Juno p. 162Public domain
Show the original text
Juno (lridaceae). This genus has been separated from Iris, and this separation is adopted here. Germination can extend over periods as long as 4 y and probably more. Treatment with GA-3 has not as yet initiated germination. J. aucheri germ. 70-40(1/12)-70-40(3/12)-70-40-70(1/12) and 40-70(2/12)-40- 70-40-70-40(1/12). After eight more cycles the seed remained firm and alive. One seed germ. after 4 y and another after 6 y. Both were healthy, IDS m at 70 germ. 70-40(1/9)-70-40(1/9)-70(1/9) and 40-70-40(1/9)-70-40(1/9). Seed DS 6 m at 40 germ. 70-40-70-40-70(2/15)-40-70(8/15)-40-70-40-70(4/15). There seems to be no pattern or T preference to these extended germinations.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Juno p. 162. 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, 1993

Difficulty High Rated by us, not by the source.

Start around June 19, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on June 18, 2026.

  1. Dry storage

    Duration: 180 daysTemperature: 40°F 4°C

  2. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

  3. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  4. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

  5. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

    1/9 germinated in this phase.

  6. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

    1/9 germinated in this phase.

Steps after step 3 run on after germination.

about 9 months from start to step 3. Germination happens during step 3; time not stated, 21 days assumed.

11% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Juno p. 162Public domain
Show the original text
Juno (lridaceae). This genus has been separated from Iris, and this separation is adopted here. Germination can extend over periods as long as 4 y and probably more. Treatment with GA-3 has not as yet initiated germination. J. aucheri germ. 70-40(1/12)-70-40(3/12)-70-40-70(1/12) and 40-70(2/12)-40- 70-40-70-40(1/12). After eight more cycles the seed remained firm and alive. One seed germ. after 4 y and another after 6 y. Both were healthy, IDS m at 70 germ. 70-40(1/9)-70-40(1/9)-70(1/9) and 40-70-40(1/9)-70-40(1/9). Seed DS 6 m at 40 germ. 70-40-70-40-70(2/15)-40-70(8/15)-40-70-40-70(4/15). There seems to be no pattern or T preference to these extended germinations.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Juno p. 162. 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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