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Bupleurum spinosum

Spiny Hare's-ear

Family ApiaceaeGenus Bupleurum

Small umbels of yellow-green flowers on stiff branching green stems above dry ground
FlowerSantiago Martín-BravoCC BY 4.0

About the plant

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

Habit
subshrubPlants of the World Online
Flower
Yellow-greenRead from the photograph on this page
Native range
Algeria, Morocco, Spain, TunisiaGBIF 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 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: dark

    14 germinated in this phase.

  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 21 days.

28% germination in 21 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Bupleurum p. 108Public domain
Show the original text
Bupleurum (Apiaceae). B; aureum germ. best in. 40(99% in 3rd w) or outdoor treatment (96% in March) and poorer in 70(25% in 1-11 w)-40(18% in 2-5 w)-70. This last sample was treated with GA-3 after 5 w at 70 whereupon the remaining 57% germ. in 1-3 w. It is likely that GA-3 treatment would have led to 100% .germination immediately at 70. Light had no effect. Seeds placed outdoors March 1 germ. 96% in April, a result of the low T. B. spinosum germ. 70D(14% in 8-11 w)-40(28% in 3d w) and 40-70-40(1/7).
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Bupleurum p. 108. 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 September 17, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on September 16, 2026.

  1. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  2. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

  3. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

about 6 months from start to step 3. Germination happens during step 3; time not stated, 21 days assumed.

14% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Bupleurum p. 108Public domain
Show the original text
Bupleurum (Apiaceae). B; aureum germ. best in. 40(99% in 3rd w) or outdoor treatment (96% in March) and poorer in 70(25% in 1-11 w)-40(18% in 2-5 w)-70. This last sample was treated with GA-3 after 5 w at 70 whereupon the remaining 57% germ. in 1-3 w. It is likely that GA-3 treatment would have led to 100% .germination immediately at 70. Light had no effect. Seeds placed outdoors March 1 germ. 96% in April, a result of the low T. B. spinosum germ. 70D(14% in 8-11 w)-40(28% in 3d w) and 40-70-40(1/7).
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Bupleurum p. 108. 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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