Deno’s Garden

Picea abies

Genus Picea

This source reports three treatments. All are shown.

Protocol 1

DerivedN. C. Deno, 1993

Difficulty Moderate Rated by us, not by the source.

Start around March 28, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C Light: dark

No stated waiting before sowing. Then 8 days to germinate.

45% germination in 6–8 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Picea p. 193Public domain
Show the original text
Picea (Pinaceae). There was a high percentage of empty seed coats. P. abies germ. 70D(45% in 6-8 d), 70D GA-3(20%), and 40(9% in 9th w)- 70(30% in 4-6 d).
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Picea p. 193. 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 Moderate Rated by us, not by the source.

Start around October 1, 2026 for a May 3 last frost.

  1. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

    9 germinated in this phase.

  2. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

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

30% germination in 4–6 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Picea p. 193Public domain
Show the original text
Picea (Pinaceae). There was a high percentage of empty seed coats. P. abies germ. 70D(45% in 6-8 d), 70D GA-3(20%), and 40(9% in 9th w)- 70(30% in 4-6 d).
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Picea p. 193. 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 High Rated by us, not by the source.

Start around March 15, 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. Germination time not stated; 21 days assumed.

20% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Picea p. 193Public domain
Show the original text
Picea (Pinaceae). There was a high percentage of empty seed coats. P. abies germ. 70D(45% in 6-8 d), 70D GA-3(20%), and 40(9% in 9th w)- 70(30% in 4-6 d).
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Picea p. 193. 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.