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Arthropodium cirrhatum

Rock-lily

Family AsparagaceaeGenus Arthropodium

A clump of broad arching strap leaves with sprays of small white nodding flowers held above them in a garden bed
The whole plantWendy CutlerCC BY 2.0

About the plant

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

Flower
WhiteWikipedia

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

Source: Wikipedia — Wikipedia contributors.

Worth knowing

  • Rengarenga comes from the Proto-Polynesian word for turmeric, because the two plants have similar stems and roots. The Māori ate its rhizomes cooked in a hāngī, and the botanist William Colenso believed it was once cultivated. Wikipedia: Arthropodium cirratum

Three sources report 4 treatments between them. All are shown.

Protocol 1

DerivedN. C. Deno, 1998

Difficulty High Rated by us, not by the source.

Start around March 16, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on March 15, 2024.

  1. Dry storage

    Duration: 1095 daysTemperature: 70°F 21°C

  2. Gibberellic acid soak

  3. Sow and cover

    Temperature: 70°F 21°C

about 3 years from start to sowing. Then 21 days to germinate.

24% germination in 7–21 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Arthropodium p. 15Public domain
Show the original text
Arthropodium (Liliaceae). A. cirrhatum germ. only with GA-3 (2nd Ed.). A new sample DS 3 y germ. 70 GA-3(24% in 1-3 w) and 70D(5% in 3rd w) suggesting that the GA-3 requirement may disappear with DS although there is uncertainty because of the data is not on the same sample.
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Arthropodium p. 15. 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 Very high Rated by us, not by the source.

Start around March 16, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on March 15, 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 21 days to germinate.

5% germination in 21 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Arthropodium p. 15Public domain
Show the original text
Arthropodium (Liliaceae). A. cirrhatum germ. only with GA-3 (2nd Ed.). A new sample DS 3 y germ. 70 GA-3(24% in 1-3 w) and 70D(5% in 3rd w) suggesting that the GA-3 requirement may disappear with DS although there is uncertainty because of the data is not on the same sample.
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Arthropodium p. 15. 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, 1996

Difficulty High Rated by us, not by the source.

Start around January 18, 2027 for a May 3 last frost.

  1. Gibberellic acid soak

  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

    10 germinated in this phase.

  5. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

    10 germinated in this phase.

Steps after step 2 run on after germination.

Germination happens during step 2, in 77 days.

25% germination in 21–77 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Arthropodium p. 23Public domain
Show the original text
Arthropodium (Liliaceae). A. cirrhatum germ. only with GA-3. Data for this treatment is now complete: 70 GA-3(25% in 3-11 w)-40-70(10%)-40(10%).
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Arthropodium p. 23. 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 January 18, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C

No stated waiting before sowing. Then 77 days to germinate.

36% germination in 21–77 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Arthropodium p. 102Public domain
Show the original text
Arthropodium (Llliaceae). A. cirrhatum germ. 70(4/11 in 3-11 w) if treated with GA-3 and none in the control. The GA-3 seedlings were normal.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Arthropodium p. 102. 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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