Deno’s Garden

Iris magnifica

Genus Iris

Protocol

DerivedN. C. Deno, 1993

Difficulty Moderate Rated by us, not by the source.

  1. Cold moist stratification

    Temperature: 40°F 4°C

No stated waiting before sowing. Then 84 days to germinate.

30% germination in 70–84 days.

This source doesn't state how long.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Juno p. 162Public domain
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Juno (lridaceae). This genus has been separated from Iris, and this separation is adopted here. Germination can extend over periods as long as 4 y and probably more. Treatment with GA-3 has not as yet initiated germination. J. magnifica germ. 40(30-100% in 10-12 w in six samples). The true leaf starts to form at 40, and development accelerates on shifting to 70. In samples where germination was below 100% germination occurred in further cycles.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Juno p. 162. 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.