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Fibigia clypeata

Roman Shields · Silver Shield

Family BrassicaceaeGenus Fibigia

A rosette of gray hairy leaves seen from above, with small yellow four-petalled flowers ringing a green center.
FlowerSalicynaCC BY-SA 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
YellowRead from the photograph on this page
Native range
Albania, Bulgaria, Cyprus, Egypt, Greece, Iran and elsewhereGBIF 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.

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

Protocol 1

DerivedSER, INSR and RBG Kew, 2026

Difficulty Low Rated by us, not by the source.

Start around March 15, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C Light: eitherMedium: 1% agar

    12 hours light, 12 dark.

No stated waiting before sowing. Germination time not stated; 21 days assumed.

100% germination.

Twice Deno's figure at the same temperature.

Seed Information Database — SER, INSR and RBG Kew, 2026 · Germination records, ser-sid.orgCreative Commons Attribution — reused with credit
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Fibigia clypeata · 100% germination · sample size 100 · 1% agar · 12/12 light hours · 21°C · Macedonia, the former Yugoslav Republic of
Seed Information Database, Germination records, ser-sid.org. 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

DerivedSER, INSR and RBG Kew, 2026

Difficulty Low Rated by us, not by the source.

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

  1. Sow and cover

    Duration: 35 daysTemperature: 59°F 15°C Light: eitherMedium: 1% agar

    12 hours light, 12 dark.

about 5 weeks from start to sowing. Then 35 days to germinate.

95% germination in 35 days.

Seed Information Database — SER, INSR and RBG Kew, 2026 · Germination records, ser-sid.orgCreative Commons Attribution — reused with credit
Show the original text
Fibigia clypeata · 95% germination · sample size 20 · 1% agar · 12/12 light hours · 15°C · 35 days · Lebanon
Seed Information Database, Germination records, ser-sid.org. 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 Low Rated by us, not by the source.

Start around February 1, 2027 for a May 3 last frost.

  1. Cold moist stratification

    Temperature: 40°F 4°C

    Germinates in the cold, in 3-9 weeks.

Germination happens during step 1, in 63 days.

50% germination in 21–63 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, FibigiaPublic domain
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Fibigia (Brassicaceae). F. clypeata germ. 70(40-50% in the 2nd w) and 40(50% in 3-9 w). Light or GA-3 had no effect on the rate or percentage germination.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Fibigia. 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 Low Rated by us, not by the source.

Start around March 22, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C Light: either

No stated waiting before sowing. Then 14 days to germinate.

40% germination in 14 days.

Deno gives 40-50%. Neither light nor GA-3 changed the result.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, FibigiaPublic domain
Show the original text
Fibigia (Brassicaceae). F. clypeata germ. 70(40-50% in the 2nd w) and 40(50% in 3-9 w). Light or GA-3 had no effect on the rate or percentage germination.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Fibigia. 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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