Deno’s Garden

Geissorhiza aspera

Genus Geissorhiza

This source reports two treatments. Both are shown.

Protocol 1

DerivedN. C. Deno, 1998

Difficulty Moderate Rated by us, not by the source.

Start around August 27, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on August 26, 2026.

  1. Warm moist stratification

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

  2. Cold moist stratification

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

about 6 months from start to sowing. Then 42 days to germinate.

100% germination in 28–42 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Geissorhiza p. 35Public domain
Show the original text
Geissorhiza (Iridaceae). Except for G. aspera germ. 40(71% in 4-6 w), 70D-40(100% in 4-6 w). Light had no effect. Seeds DS 1 y germ. the same as the fresh seeds.
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Geissorhiza p. 35. 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, 1998

Difficulty Low Rated by us, not by the source.

Start around February 22, 2027 for a May 3 last frost.

  1. Cold moist stratification

    Temperature: 40°F 4°C Light: either

No stated waiting before sowing. Then 42 days to germinate.

71% germination in 28–42 days.

This source doesn't state how long.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Geissorhiza p. 35Public domain
Show the original text
Geissorhiza (Iridaceae). Except for G. aspera germ. 40(71% in 4-6 w), 70D-40(100% in 4-6 w). Light had no effect. Seeds DS 1 y germ. the same as the fresh seeds.
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Geissorhiza p. 35. 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.