Deno’s Garden

Betula pubescens

Genus Betula

This source reports three treatments. All are shown.

Protocol 1

DerivedN. C. Deno, 1996

Difficulty High Rated by us, not by the source.

Start around March 30, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C Light: light

No stated waiting before sowing. Then 6 days to germinate.

13% germination in 6 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Betula p. 25Public domain
Show the original text
Betula (Betulaceae). Light and/or 40-70 patterns were best. B. pubescens germ. 70L(13% on 6th d), 70D(8% in 4th w), and none in 70 GA-3 or 40.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Betula p. 25. 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 Very high Rated by us, not by the source.

Start around March 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 28 days to germinate.

8% germination in 28 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Betula p. 25Public domain
Show the original text
Betula (Betulaceae). Light and/or 40-70 patterns were best. B. pubescens germ. 70L(13% on 6th d), 70D(8% in 4th w), and none in 70 GA-3 or 40.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Betula p. 25. 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

  1. Sow and cover

    Temperature: 70°F 21°C

No stated waiting before sowing.

0% germination.

Nothing germinated at 70.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Betula p. 25Public domain
Show the original text
Betula (Betulaceae). Light and/or 40-70 patterns were best. B. pubescens germ. 70L(13% on 6th d), 70D(8% in 4th w), and none in 70 GA-3 or 40.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Betula p. 25. Quoted exactly. Every value on this card comes from this record; the step names come from a fixed list.