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Fritillaria acmopetala

Pointed-petal Fritillary

Family LiliaceaeGenus Fritillaria

A nodding bell striped maroon and cream outside, opened to show a yellow-green veined interior
FlowerElie plusCC BY 3.0

About the plant

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

Habit
bulbous geophytePlants of the World Online
Flower
Maroon, yellow-greenRead from the photograph on this page
Native range
Cyprus, Lebanon-Syria, Palestine, 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; Read from the photograph on this page — Deno's Garden; GBIF Backbone Taxonomy — Global Biodiversity Information Facility.

Worth knowing

  • The pointed-petal fritillary grows on rocky limestone slopes in the Middle East. Boissier described it in 1846, and it came into cultivation in 1874. Wikipedia: Fritillaria acmopetala

This source reports three treatments. All are shown.

Protocol 1

DerivedN. C. Deno, 1993

Difficulty Low Rated by us, not by the source.

Start around January 25, 2027 for a May 3 last frost.

  1. Cold moist stratification

    Temperature: 40°F 4°C

Germination happens during step 1, in 70 days.

100% germination in 42–70 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Fritillaria p. 144Public domain
Show the original text
Fritillaria (Liliaceae). This genus germ. primarily at 40. Sometimes this had to be preceded by a cycle at 70 making the species a 70-40 germinator. The seedlings did not always develop, and it is probable that this was the result of shifting them to 70 too suddenly. More study is needed on this problem. Some species showed intolerance to DS, particularly F. acmopetala germ. best with fresh seed in 40(45% in 9-12 w)-70(23% in 2-6 d). A prior 3 m at 70 had no effect. DS for 6 m at 70 is fatal. F. caricá germ. 40(100% in 6-10w) and 70-40(45%% in 11th w).
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Fritillaria p. 144. 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 Moderate Rated by us, not by the source.

Start around January 11, 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

    23 germinated in this phase.

Steps after step 1 run on after germination.

Germination happens during step 1, in 84 days.

45% germination in 63–84 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Fritillaria p. 144Public domain
Show the original text
Fritillaria (Liliaceae). This genus germ. primarily at 40. Sometimes this had to be preceded by a cycle at 70 making the species a 70-40 germinator. The seedlings did not always develop, and it is probable that this was the result of shifting them to 70 too suddenly. More study is needed on this problem. Some species showed intolerance to DS, particularly F. acmopetala germ. best with fresh seed in 40(45% in 9-12 w)-70(23% in 2-6 d). A prior 3 m at 70 had no effect. DS for 6 m at 70 is fatal. F. caricá germ. 40(100% in 6-10w) and 70-40(45%% in 11th w).
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Fritillaria p. 144. 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 Moderate Rated by us, not by the source.

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

  1. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

  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 77 days.

45% germination in 77 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Fritillaria p. 144Public domain
Show the original text
Fritillaria (Liliaceae). This genus germ. primarily at 40. Sometimes this had to be preceded by a cycle at 70 making the species a 70-40 germinator. The seedlings did not always develop, and it is probable that this was the result of shifting them to 70 too suddenly. More study is needed on this problem. Some species showed intolerance to DS, particularly F. acmopetala germ. best with fresh seed in 40(45% in 9-12 w)-70(23% in 2-6 d). A prior 3 m at 70 had no effect. DS for 6 m at 70 is fatal. F. caricá germ. 40(100% in 6-10w) and 70-40(45%% in 11th w).
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Fritillaria p. 144. 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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