Deno’s Garden

Rehmannia elata

Genus Rehmannia

This source reports three treatments. All are shown.

Protocol 1

DerivedN. C. Deno, 1996

Difficulty Low Rated by us, not by the source.

Start around March 29, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C Light: light

No stated waiting before sowing. Then 7 days to germinate.

100% germination in 7 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Rehmannia p. 70Public domain
Show the original text
Rehmannia (Scrophulariaceae). R. elata germ. 70D(90% in 6th d) and 70L(100% on 7th d). All rotted in 70 GA-3. Seeds DS 1 y germ. 70D(70% in 6-16 d) showing both a decline in percent germination and a slowing of rate.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Rehmannia p. 70. 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 30, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C Light: dark

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

90% germination in 6 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Rehmannia p. 70Public domain
Show the original text
Rehmannia (Scrophulariaceae). R. elata germ. 70D(90% in 6th d) and 70L(100% on 7th d). All rotted in 70 GA-3. Seeds DS 1 y germ. 70D(70% in 6-16 d) showing both a decline in percent germination and a slowing of rate.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Rehmannia p. 70. 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 March 21, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on March 20, 2026.

  1. Dry storage

    Duration: 365 daysTemperature: 70°F 21°C

  2. Sow and cover

    Temperature: 70°F 21°C Light: dark

about 12 months from start to sowing. Then 16 days to germinate.

70% germination in 6–16 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Rehmannia p. 70Public domain
Show the original text
Rehmannia (Scrophulariaceae). R. elata germ. 70D(90% in 6th d) and 70L(100% on 7th d). All rotted in 70 GA-3. Seeds DS 1 y germ. 70D(70% in 6-16 d) showing both a decline in percent germination and a slowing of rate.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Rehmannia p. 70. 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.