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Wulfenia carinthiaca

Cow's Footstep

Family PlantaginaceaeGenus Wulfenia

Deep blue flower spikes above broad basal leaves
FlowerHedwig StorchCC BY-SA 3.0

About the plant

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

Habit
perennialPlants of the World Online
Flower
Violet-blueRead from the photograph on this page
Native range
Austria, Italy, NW. Balkan Pen.GBIF 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.

Worth knowing

  • Wulfenia grows wild only on the Gartnerkofel mountain in the Carnic Alps, on the Austrian-Italian border. Franz Xaver von Wulfen discovered it in 1779, and it is named after him. Wikipedia: Wulfenia carinthiaca

This source reports 5 treatments. All are shown.

Protocol 1

DerivedN. C. Deno, 1993

Difficulty Low Rated by us, not by the source.

Start around March 26, 2027 for a May 3 last frost.

  1. Sow on the surface — do not cover

    Temperature: 70°F 21°C Light: light

No stated waiting before sowing. Then 10 days to germinate.

90% germination in 8–10 days.

90% on the surface in light, and nothing else to do.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, WulfeniaPublic domain
Show the original text
Wulfenla (Scrophulariaceae). W. carinthiaca required light or GA-3. Seeds germ. 70L(90% in 8-10 d), 70D GA-3(90% in 9-15 d), 70D(none), 40-70L(86% in 4-6 d), and 40-70D(none)..
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Wulfenia. 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 Low Rated by us, not by the source.

Start around March 21, 2027 for a May 3 last frost.

  1. Gibberellic acid soak

  2. Sow and cover

    Temperature: 70°F 21°C Light: dark

No stated waiting before sowing. Then 15 days to germinate.

90% germination in 9–15 days.

GA-3 matches the light exactly -- the same 90%, a few days slower.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, WulfeniaPublic domain
Show the original text
Wulfenla (Scrophulariaceae). W. carinthiaca required light or GA-3. Seeds germ. 70L(90% in 8-10 d), 70D GA-3(90% in 9-15 d), 70D(none), 40-70L(86% in 4-6 d), and 40-70D(none)..
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Wulfenia. 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 December 30, 2026 for a May 3 last frost.

  1. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

    Deno gives no length for this period; three months is his standard cycle.

  2. Sow on the surface — do not cover

    Temperature: 70°F 21°C Light: light

about 3 months from start to sowing. Then 6 days to germinate.

86% germination in 4–6 days.

A cold period halves the wait for four points. Still needs the light.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, WulfeniaPublic domain
Show the original text
Wulfenla (Scrophulariaceae). W. carinthiaca required light or GA-3. Seeds germ. 70L(90% in 8-10 d), 70D GA-3(90% in 9-15 d), 70D(none), 40-70L(86% in 4-6 d), and 40-70D(none)..
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Wulfenia. 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

  1. Sow and cover

    Temperature: 70°F 21°C Light: dark

    Nothing.

No stated waiting before sowing.

0% germination.

Nothing in the dark without GA-3.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, WulfeniaPublic domain
Show the original text
Wulfenla (Scrophulariaceae). W. carinthiaca required light or GA-3. Seeds germ. 70L(90% in 8-10 d), 70D GA-3(90% in 9-15 d), 70D(none), 40-70L(86% in 4-6 d), and 40-70D(none)..
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Wulfenia. Quoted exactly. Every value on this card comes from this record; the step names come from a fixed list.

Protocol 5

DerivedN. C. Deno, 1993

  1. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

    Deno gives no length for this period; three months is his standard cycle.

  2. Sow and cover

    Temperature: 70°F 21°C Light: dark

    Nothing.

about 3 months from start to sowing.

0% germination.

Nothing in the dark after a cold period either. The cold is no substitute for the light.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, WulfeniaPublic domain
Show the original text
Wulfenla (Scrophulariaceae). W. carinthiaca required light or GA-3. Seeds germ. 70L(90% in 8-10 d), 70D GA-3(90% in 9-15 d), 70D(none), 40-70L(86% in 4-6 d), and 40-70D(none)..
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Wulfenia. Quoted exactly. Every value on this card comes from this record; 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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