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Asphodeline brevicaulis

Jacob's Rod

Family AsphodelaceaeGenus Asphodeline

A tall spike of yellow star-shaped flowers with long stamens, opening from green buds
FlowerPictured: Asphodeline lutea, a relativeThierry ArbaultCC BY 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
Cyprus, East Aegean Is., Iran, Iraq, Lebanon-Syria, Palestine 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.

This source reports two treatments. Both are shown.

Protocol 1

DerivedN. C. Deno, 1998

Difficulty Low Rated by us, not by the source.

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

  1. Sow and cover

    Temperature: 70°F 21°C Light: dark

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

100% germination in 10 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Asphodeline p. 16Public domain
Show the original text
Asphodeline (Liliaceae). A. brevicaulis data is now more complete. It germ. 70D(2/2 on 10th d) and 40-70D-40(1/2 in 7th w).
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Asphodeline p. 16. 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, 1998

Difficulty High Rated by us, not by the source.

Start around August 20, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on August 19, 2026.

  1. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  2. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C Light: dark

  3. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

about 6 months from start to step 3. Germination happens during step 3, in 49 days.

50% germination in 49 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Asphodeline p. 16Public domain
Show the original text
Asphodeline (Liliaceae). A. brevicaulis data is now more complete. It germ. 70D(2/2 on 10th d) and 40-70D-40(1/2 in 7th w).
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Asphodeline p. 16. 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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