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Erysimum cheiri

Aegean Wallflower · Wallflower

Family BrassicaceaeGenus Erysimum

A head of bright yellow four-petalled flowers opening from a dark purple bud cluster, above narrow gray-green leaves.
FlowerDominicus Johannes BergsmaCC BY-SA 3.0

About the plant

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

Habit
Biennial, Perennial, Forb/herbPLANTS Database
Flower
Orange, yellow, brown, red, purple, violet, whiteFlora of North America
Native range
GreeceGBIF Backbone Taxonomy

Toxicity is noted only where a source states it. No note here is not a finding of safety.

Sources: PLANTS Database — USDA NRCS; Flora of North America — Flora of North America Editorial Committee; GBIF Backbone Taxonomy — Global Biodiversity Information Facility.

Worth knowing

  • The wallflower is native to Greece but widely introduced elsewhere. It was long known as Cheiranthus cheiri. Wikipedia: Erysimum cheiri

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 March 15, 2027 for a May 3 last frost.

  1. Cold moist stratification

    Temperature: 40°F 4°C

Germination happens during step 1, in 21 days.

60% germination in 21 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Cheiranthus p. 117Public domain
Show the original text
Cheiranthus (Brassicaceae). C. cheiri germ. 70(60-85% in 2-18 d) and 40(60-85% in 3rd w) for either fresh seed or seed DS 6 m at 70 or 40..
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Cheiranthus p. 117. 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 March 18, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C

No stated waiting before sowing. Then 18 days to germinate.

60% germination in 2–18 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Cheiranthus p. 117Public domain
Show the original text
Cheiranthus (Brassicaceae). C. cheiri germ. 70(60-85% in 2-18 d) and 40(60-85% in 3rd w) for either fresh seed or seed DS 6 m at 70 or 40..
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Cheiranthus p. 117. 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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