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Libertia ixioides

Mikoikoi · New Zealand Iris

Family IridaceaeGenus Libertia

A tussock of arching green and bronze grassy leaves among fallen leaves, beside a garden label
The whole plantDaderotCC0

About the plant

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

Habit
tuberous geophytePlants of the World Online
Flower
WhiteWikipedia
Native range
New Zealand North, New Zealand SouthGBIF 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

This source reports 5 treatments. All are shown.

Protocol 1

DerivedN. C. Deno, 1998

Difficulty High Rated by us, not by the source.

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

  1. Warm moist stratification

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

    15 germinated in this phase.

  2. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  3. Warm moist stratification

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

    6 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, in 21 days.

50% germination in 21 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Libertia p. 44Public domain
Show the original text
Libertia (Iridaceae). L. ixioides germ. 70D-40(1/33 in 9th w), 70L(15% in 4-12 w)-40(50% in 3rd w)- 70D(6%), 40-70D-40-70D(2/13), and 40-70L-40{2/7). A sample DS 3 y germ. 70D(38% in 4-12 w) and 40(18% in 8th w)-70D(18% in 1-7 w).
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Libertia p. 44. 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 Moderate Rated by us, not by the source.

Start around January 12, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on January 12, 2024.

  1. Dry storage

    Duration: 1095 daysTemperature: 70°F 21°C

  2. Sow and cover

    Temperature: 70°F 21°C Light: dark

about 3 years from start to sowing. Then 84 days to germinate.

38% germination in 28–84 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Libertia p. 44Public domain
Show the original text
Libertia (Iridaceae). L. ixioides germ. 70D-40(1/33 in 9th w), 70L(15% in 4-12 w)-40(50% in 3rd w)- 70D(6%), 40-70D-40-70D(2/13), and 40-70L-40{2/7). A sample DS 3 y germ. 70D(38% in 4-12 w) and 40(18% in 8th w)-70D(18% in 1-7 w).
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Libertia p. 44. 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 February 9, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on February 9, 2024.

  1. Dry storage

    Duration: 1095 daysTemperature: 70°F 21°C

  2. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  3. Warm moist stratification

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

    18 germinated in this phase.

Steps after step 2 run on after germination.

about 3 years from start to step 2. Germination happens during step 2, in 56 days.

18% germination in 56 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Libertia p. 44Public domain
Show the original text
Libertia (Iridaceae). L. ixioides germ. 70D-40(1/33 in 9th w), 70L(15% in 4-12 w)-40(50% in 3rd w)- 70D(6%), 40-70D-40-70D(2/13), and 40-70L-40{2/7). A sample DS 3 y germ. 70D(38% in 4-12 w) and 40(18% in 8th w)-70D(18% in 1-7 w).
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Libertia p. 44. 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, 1998

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. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  2. Warm moist stratification

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

  3. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  4. Warm moist stratification

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

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

15% germination.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Libertia p. 44Public domain
Show the original text
Libertia (Iridaceae). L. ixioides germ. 70D-40(1/33 in 9th w), 70L(15% in 4-12 w)-40(50% in 3rd w)- 70D(6%), 40-70D-40-70D(2/13), and 40-70L-40{2/7). A sample DS 3 y germ. 70D(38% in 4-12 w) and 40(18% in 8th w)-70D(18% in 1-7 w).
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Libertia p. 44. 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, 1998

Difficulty Very high Rated by us, not by the source.

Start around November 3, 2026 for a May 3 last frost.

  1. Warm moist stratification

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

  2. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

about 3 months from start to step 2. Germination happens during step 2, in 63 days.

3% germination in 63 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Libertia p. 44Public domain
Show the original text
Libertia (Iridaceae). L. ixioides germ. 70D-40(1/33 in 9th w), 70L(15% in 4-12 w)-40(50% in 3rd w)- 70D(6%), 40-70D-40-70D(2/13), and 40-70L-40{2/7). A sample DS 3 y germ. 70D(38% in 4-12 w) and 40(18% in 8th w)-70D(18% in 1-7 w).
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Libertia p. 44. 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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