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Allium album

Ornamental Onion · Cottonball Flowering Onion

Family AmaryllidaceaeGenus Allium

This source reports 4 treatments. All are shown.

Protocol 1

DerivedN. C. Deno, 1996

Difficulty Low Rated by us, not by the source.

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

  1. Gibberellic acid soak

  2. Sow and cover

    Temperature: 70°F 21°C

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

100% germination in 14 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Allium p. 18Public domain
Show the original text
Allium (Liliaceae). A. alba germ. 70D(97% in 1-8 w), 70 GA-3(100% in 2nd w), 70L{100% in 2-5 w), 40-70D(93% in 3 d-2 w), and OT{100% in first 2 w of Nov. from seeds placed outdoors in mid-Oct). The data suggest that OS and GA-3 gave a modest increase to the rate of germination.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Allium p. 18. 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, 1996

Difficulty Low Rated by us, not by the source.

  1. Sow outdoors and leave it

No stated waiting before sowing.

100% germination.

This source doesn't state how long.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Allium p. 18Public domain
Show the original text
Allium (Liliaceae). A. alba germ. 70D(97% in 1-8 w), 70 GA-3(100% in 2nd w), 70L{100% in 2-5 w), 40-70D(93% in 3 d-2 w), and OT{100% in first 2 w of Nov. from seeds placed outdoors in mid-Oct). The data suggest that OS and GA-3 gave a modest increase to the rate of germination.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Allium p. 18. 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, 1996

Difficulty Low Rated by us, not by the source.

Start around February 8, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C Light: dark

No stated waiting before sowing. Then 56 days to germinate.

97% germination in 7–56 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Allium p. 18Public domain
Show the original text
Allium (Liliaceae). A. alba germ. 70D(97% in 1-8 w), 70 GA-3(100% in 2nd w), 70L{100% in 2-5 w), 40-70D(93% in 3 d-2 w), and OT{100% in first 2 w of Nov. from seeds placed outdoors in mid-Oct). The data suggest that OS and GA-3 gave a modest increase to the rate of germination.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Allium p. 18. 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, 1996

Difficulty Moderate Rated by us, not by the source.

Start around September 24, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on September 23, 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

about 6 months from start to sowing. Then 14 days to germinate.

93% germination in 3–14 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Allium p. 18Public domain
Show the original text
Allium (Liliaceae). A. alba germ. 70D(97% in 1-8 w), 70 GA-3(100% in 2nd w), 70L{100% in 2-5 w), 40-70D(93% in 3 d-2 w), and OT{100% in first 2 w of Nov. from seeds placed outdoors in mid-Oct). The data suggest that OS and GA-3 gave a modest increase to the rate of germination.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Allium p. 18. 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.

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