Deno’s Garden

Alnus serrulata

Genus Alnus

This source reports 4 treatments. All are shown.

Protocol 1

DerivedN. C. Deno, 1996

Difficulty High Rated by us, not by the source.

  1. Sow outdoors and leave it

    Up in May and June.

No stated waiting before sowing.

23% germination.

This source doesn't state how long.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Alnus p. 18Public domain
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Alnus (Betulaceae). All samples were received in March, and had already undergone at least 6 m of DS and probably more. Since DS was clearly detrimental in A. serrulata germ. 70L(18% in 2-7 w), 70 GA-3(18% in 2-6 w), 70D(none), 40- 70D(20% in 4-10 d), and 23% in May and June in OT.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Alnus 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 High Rated by us, not by the source.

Start around September 27, 2026 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

about 6 months from start to sowing. Then 10 days to germinate.

20% germination in 4–10 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Alnus p. 18Public domain
Show the original text
Alnus (Betulaceae). All samples were received in March, and had already undergone at least 6 m of DS and probably more. Since DS was clearly detrimental in A. serrulata germ. 70L(18% in 2-7 w), 70 GA-3(18% in 2-6 w), 70D(none), 40- 70D(20% in 4-10 d), and 23% in May and June in OT.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Alnus 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 High Rated by us, not by the source.

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

  1. Sow and cover

    Temperature: 70°F 21°C Light: light

No stated waiting before sowing. Then 49 days to germinate.

18% germination in 14–49 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Alnus p. 18Public domain
Show the original text
Alnus (Betulaceae). All samples were received in March, and had already undergone at least 6 m of DS and probably more. Since DS was clearly detrimental in A. serrulata germ. 70L(18% in 2-7 w), 70 GA-3(18% in 2-6 w), 70D(none), 40- 70D(20% in 4-10 d), and 23% in May and June in OT.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Alnus 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 High Rated by us, not by the source.

Start around February 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 42 days to germinate.

18% germination in 14–42 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Alnus p. 18Public domain
Show the original text
Alnus (Betulaceae). All samples were received in March, and had already undergone at least 6 m of DS and probably more. Since DS was clearly detrimental in A. serrulata germ. 70L(18% in 2-7 w), 70 GA-3(18% in 2-6 w), 70D(none), 40- 70D(20% in 4-10 d), and 23% in May and June in OT.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Alnus 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.