Mendel’s Gardens

Onosma armena

Family BoraginaceaeGenus Onosma

Also published as Onosma armenum. You are in the right place.

This source reports two treatments. Both are shown.

Protocol 1

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. Cold moist stratification

    Temperature: 40°F 4°C

No stated waiting before sowing. Germination time not stated; 21 days assumed.

31% germination.

Four seeds of thirteen, and nothing at all at 70.

This source doesn't state how long.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, OnosmaPublic domain
Show the original text
Onosma (Boraginaceae). Germination were predominantly at 40. 0. armenum germ. 4/13 at 40 and none at 70.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Onosma. 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

  1. Sow and cover

    Temperature: 70°F 21°C

No stated waiting before sowing.

0% germination.

Nothing. Deno's genus note holds here: germination is at 40.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, OnosmaPublic domain
Show the original text
Onosma (Boraginaceae). Germination were predominantly at 40. 0. armenum germ. 4/13 at 40 and none at 70.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Onosma. Quoted exactly. Every value on this card comes from this record; the step names come from a fixed list.