Deno’s Garden

Scrophularia nodosa

Genus Scrophularia

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 April 1, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C Light: light

No stated waiting before sowing. Then 4 days to germinate.

100% germination in 4 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Scrophularia p. 76Public domain
Show the original text
Scrophularia (Scrophulariaceae). S. nodosa germ. 70L(100% on 4th d), 70 GA-3(100% in 4-9 d), and 70D(19% in 1-3 w). When the seeds in 70D were shifted to 70L after 3 m, the remaining 81% germ. in 4-6 d. A prior 3 m at 40 was fatal. After 1 y DS the light requirement disappeared, and the seeds germ. 92% in 4-8 d in either 70D or 70L. After 2 y DS the seeds germ. 70D(22% in 4-10 d) indicating extensive dying.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Scrophularia p. 76. 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.

Start around March 27, 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 9 days to germinate.

100% germination in 4–9 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Scrophularia p. 76Public domain
Show the original text
Scrophularia (Scrophulariaceae). S. nodosa germ. 70L(100% on 4th d), 70 GA-3(100% in 4-9 d), and 70D(19% in 1-3 w). When the seeds in 70D were shifted to 70L after 3 m, the remaining 81% germ. in 4-6 d. A prior 3 m at 40 was fatal. After 1 y DS the light requirement disappeared, and the seeds germ. 92% in 4-8 d in either 70D or 70L. After 2 y DS the seeds germ. 70D(22% in 4-10 d) indicating extensive dying.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Scrophularia p. 76. 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 March 27, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on March 26, 2025.

  1. Dry storage

    Duration: 730 daysTemperature: 70°F 21°C

  2. Sow and cover

    Temperature: 70°F 21°C Light: dark

about 2 years from start to sowing. Then 10 days to germinate.

22% germination in 4–10 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Scrophularia p. 76Public domain
Show the original text
Scrophularia (Scrophulariaceae). S. nodosa germ. 70L(100% on 4th d), 70 GA-3(100% in 4-9 d), and 70D(19% in 1-3 w). When the seeds in 70D were shifted to 70L after 3 m, the remaining 81% germ. in 4-6 d. A prior 3 m at 40 was fatal. After 1 y DS the light requirement disappeared, and the seeds germ. 92% in 4-8 d in either 70D or 70L. After 2 y DS the seeds germ. 70D(22% in 4-10 d) indicating extensive dying.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Scrophularia p. 76. 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 March 15, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C Light: dark

No stated waiting before sowing. Then 21 days to germinate.

19% germination in 7–21 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Scrophularia p. 76Public domain
Show the original text
Scrophularia (Scrophulariaceae). S. nodosa germ. 70L(100% on 4th d), 70 GA-3(100% in 4-9 d), and 70D(19% in 1-3 w). When the seeds in 70D were shifted to 70L after 3 m, the remaining 81% germ. in 4-6 d. A prior 3 m at 40 was fatal. After 1 y DS the light requirement disappeared, and the seeds germ. 92% in 4-8 d in either 70D or 70L. After 2 y DS the seeds germ. 70D(22% in 4-10 d) indicating extensive dying.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Scrophularia p. 76. 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.