Deno’s Garden

Anchusa officinalis

Genus Anchusa

This source reports two treatments. Both are shown.

Protocol 1

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.

70% germination in 2–6 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Anchusa p. 19Public domain
Show the original text
Anchusa (Boraginaceae). A. officinalis seeds had been DS for 18 m when received. These germ. 70D(70% in 2-6 d) and 40(6%)-70. Light, GA-3, or an additional 6 m DS had no effect. Note that starting at 40 was nearly fatal.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Anchusa p. 19. 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 December 15, 2026 for a May 3 last frost.

  1. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C Light: either

  2. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C Light: either

Steps after step 1 run on after germination.

about 3 months from start to sowing. Germination time not stated; 21 days assumed.

6% germination.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Anchusa p. 19Public domain
Show the original text
Anchusa (Boraginaceae). A. officinalis seeds had been DS for 18 m when received. These germ. 70D(70% in 2-6 d) and 40(6%)-70. Light, GA-3, or an additional 6 m DS had no effect. Note that starting at 40 was nearly fatal.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Anchusa p. 19. 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.