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Euphorbia aristata

Bearded Spurge

Family EuphorbiaceaeGenus Euphorbia

A green, many-ribbed succulent stem covered in small bumps and long white spines, on dry soil
The whole plantPictured: Euphorbia mammillaris, a relativeDi TurnerCC0

About the plant

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

Habit
perennialPlants of the World Online
Native range
North CaucasusGBIF 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; GBIF Backbone Taxonomy — Global Biodiversity Information Facility.

This source reports three treatments. All are shown.

Protocol 1

DerivedN. C. Deno, 1993

Difficulty Low Rated by us, not by the source.

  1. Sow outdoors and leave it

    Up in April.

No stated waiting before sowing.

91% germination.

This source doesn't state how long step 1 lasts.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Euphorbia p. 142Public domain
Show the original text
Euphorbia (Euphorbiaceae). E. aristata germ. 91% in April in outdoor treatment. It also germ. 70D(50% in 4- 8 d)-40-70(4%)-40-70(12%) and 40(4%)-70(20% on 4th d).
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Euphorbia p. 142. 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 March 28, 2027 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

  3. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

    4 germinated in this phase.

  4. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  5. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

    12 germinated in this phase.

Steps after step 1 run on after germination.

Germination happens during step 1, in 8 days.

50% germination in 4–8 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Euphorbia p. 142Public domain
Show the original text
Euphorbia (Euphorbiaceae). E. aristata germ. 91% in April in outdoor treatment. It also germ. 70D(50% in 4- 8 d)-40-70(4%)-40-70(12%) and 40(4%)-70(20% on 4th d).
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Euphorbia p. 142. 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 January 1, 2027 for a May 3 last frost.

  1. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

    4 germinated in this phase.

  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 4 days.

20% germination in 4 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Euphorbia p. 142Public domain
Show the original text
Euphorbia (Euphorbiaceae). E. aristata germ. 91% in April in outdoor treatment. It also germ. 70D(50% in 4- 8 d)-40-70(4%)-40-70(12%) and 40(4%)-70(20% on 4th d).
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Euphorbia p. 142. 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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