Deno’s Garden

Geissorhiza eurystigma

Genus Geissorhiza

This source reports 5 treatments. All are shown.

Protocol 1

DerivedN. C. Deno, 1998

Difficulty Moderate Rated by us, not by the source.

Start around August 13, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on August 12, 2025.

  1. Dry storage

    Duration: 365 daysTemperature: 70°F 21°C

  2. Warm moist stratification

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

  3. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

about 1.5 years from start to sowing. Then 56 days to germinate.

92% germination in 21–56 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. monantha germ. 70D-40(40% in 4-6 w) and 70L-40(88% in 4th w). Seeds DS 1 y germ. 40(85% in 4-8 w), 70D-40(74% in 6th w),>and 70L-40(92% in 3-8 w). In view of the latter results fresh seeds would have undoubtedly germ. at 40.
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 Moderate Rated by us, not by the source.

Start around September 10, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on September 9, 2026.

  1. Warm moist stratification

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

  2. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

about 6 months from start to sowing. Then 28 days to germinate.

88% germination in 28 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. monantha germ. 70D-40(40% in 4-6 w) and 70L-40(88% in 4th w). Seeds DS 1 y germ. 40(85% in 4-8 w), 70D-40(74% in 6th w),>and 70L-40(92% in 3-8 w). In view of the latter results fresh seeds would have undoubtedly germ. at 40.
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 3

DerivedN. C. Deno, 1998

Difficulty Low Rated by us, not by the source.

Start around February 9, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on February 8, 2026.

  1. Dry storage

    Duration: 365 daysTemperature: 70°F 21°C

  2. Cold moist stratification

    Temperature: 40°F 4°C

about 12 months from start to sowing. Then 56 days to germinate.

85% germination in 28–56 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. monantha germ. 70D-40(40% in 4-6 w) and 70L-40(88% in 4th w). Seeds DS 1 y germ. 40(85% in 4-8 w), 70D-40(74% in 6th w),>and 70L-40(92% in 3-8 w). In view of the latter results fresh seeds would have undoubtedly germ. at 40.
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 4

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, 2025.

  1. Dry storage

    Duration: 365 daysTemperature: 70°F 21°C

  2. Warm moist stratification

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

  3. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

about 1.5 years from start to sowing. Then 42 days to germinate.

74% germination in 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. monantha germ. 70D-40(40% in 4-6 w) and 70L-40(88% in 4th w). Seeds DS 1 y germ. 40(85% in 4-8 w), 70D-40(74% in 6th w),>and 70L-40(92% in 3-8 w). In view of the latter results fresh seeds would have undoubtedly germ. at 40.
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 5

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

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

40% 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. monantha germ. 70D-40(40% in 4-6 w) and 70L-40(88% in 4th w). Seeds DS 1 y germ. 40(85% in 4-8 w), 70D-40(74% in 6th w),>and 70L-40(92% in 3-8 w). In view of the latter results fresh seeds would have undoubtedly germ. at 40.
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.