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Anemonastrum tetrasepalum

Four Petal Anemone

Family RanunculaceaeGenus Anemonastrum

A white five-petalled flower with a yellow-green center and fine purple speckles, a smaller flower below it against dark leaves
FlowerSiddarth MachadoCC BY 4.0

About the plant

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

Habit
perennialPlants of the World Online
Flower
WhiteRead from the photograph on this page
Native range
Pakistan, West HimalayaGBIF 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.

This source reports two treatments. Both are shown.

Protocol 1

DerivedN. C. Deno, 1993

Difficulty Moderate Rated by us, not by the source.

Start around October 8, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on October 7, 2026.

  1. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  2. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

about 3 months from start to step 2. Germination happens during step 2, in 90 days.

90% germination in 30–90 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Anemone p. 94Public domain
Show the original text
Anemone (Ranunculaceae). This genus divides into two groups. The .first group are early spring bloomers with hairless seed coats, multicycle germination patterns, and intolerance of OS. The second group are taller and bloom in summer and fall, the seed is embedded in cotton in a spherical cluster, and germination is largely D-70 with curious differences between DS seed and fresh seed. A. tetrasepala seed collected in the wild germ. 70(10%)-40(40%)-70(40%) and 40-70(90% in 1-3 m) indicating that a 40J0 pattern is best.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Anemone p. 94. 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 December 15, 2026 for a May 3 last frost.

  1. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

    10 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

    40 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.

40% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Anemone p. 94Public domain
Show the original text
Anemone (Ranunculaceae). This genus divides into two groups. The .first group are early spring bloomers with hairless seed coats, multicycle germination patterns, and intolerance of OS. The second group are taller and bloom in summer and fall, the seed is embedded in cotton in a spherical cluster, and germination is largely D-70 with curious differences between DS seed and fresh seed. A. tetrasepala seed collected in the wild germ. 70(10%)-40(40%)-70(40%) and 40-70(90% in 1-3 m) indicating that a 40J0 pattern is best.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Anemone p. 94. 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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