Deno’s Garden

Iris germanica

Genus Iris

Protocol

DerivedN. C. Deno, 1996

Difficulty High Rated by us, not by the source.

  1. Sow and cover

    Temperature: 70°F 21°C

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

20% germination.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Iris p. 50Public domain
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Iris (Iridaceae). The Aril Iris including Juno have been one of the most difficult groups to germinate. Section VI is devoted to this problem. Alternating cycles means alternating between 3 m at 40 and 3 m at 70 (just a reminder). I. trojana germ. 70(1/5). A 2nd seed germ. at 40 after 4 y of alternating cycles. Both seedlings were vigorous.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Iris p. 50. 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.