Deno’s GardenMy Garden

Asphodelus aestivus

Summer Asphodel

Family AsphodelaceaeGenus Asphodelus

A branched spike of white star flowers, each petal with a brown stripe, opening from tight dark buds
FlowerZeynel CebeciCC BY-SA 4.0

About the plant

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

Habit
tuberous geophytePlants of the World Online
Flower
Pinkish-whiteWikipedia
Native range
Portugal, SpainGBIF 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; Wikipedia — Wikipedia contributors; GBIF Backbone Taxonomy — Global Biodiversity Information Facility.

This source reports three treatments. All are shown.

Protocol 1

DerivedN. C. Deno, 1998

Difficulty Moderate Rated by us, not by the source.

Start around November 17, 2026 for a May 3 last frost.

  1. Warm moist stratification

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

    1/6 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 49 days.

83% germination in 49 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Asphodelus p. 16Public domain
Show the original text
Asphodelus (Liliaceae). A. aestivus germ. 70D(2/5 in 7th w)-40(2/5 in 8th w), 70L(1/6 in 12th w)-40(5/6 in 7th w), and 40(6/8 in 10-12 w)-70D(2/8 in 1-3 d). . ,
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Asphodelus 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 Moderate Rated by us, not by the source.

Start around January 11, 2027 for a May 3 last frost.

  1. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  2. Warm moist stratification

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

    2/8 germinated in this phase.

Steps after step 1 run on after germination.

Germination happens during step 1, in 84 days.

75% germination in 70–84 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Asphodelus p. 16Public domain
Show the original text
Asphodelus (Liliaceae). A. aestivus germ. 70D(2/5 in 7th w)-40(2/5 in 8th w), 70L(1/6 in 12th w)-40(5/6 in 7th w), and 40(6/8 in 10-12 w)-70D(2/8 in 1-3 d). . ,
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Asphodelus 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 3

DerivedN. C. Deno, 1998

Difficulty Moderate Rated by us, not by the source.

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

  1. Warm moist stratification

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

  2. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

    2/5 germinated in this phase.

Steps after step 1 run on after germination.

Germination happens during step 1, in 49 days.

40% germination in 49 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Asphodelus p. 16Public domain
Show the original text
Asphodelus (Liliaceae). A. aestivus germ. 70D(2/5 in 7th w)-40(2/5 in 8th w), 70L(1/6 in 12th w)-40(5/6 in 7th w), and 40(6/8 in 10-12 w)-70D(2/8 in 1-3 d). . ,
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Asphodelus 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

Add to My Garden

View species page