Deno’s Garden

Hesperochiron californicus

Genus Hesperochiron

This source reports two treatments. Both are shown.

Protocol 1

DerivedN. C. Deno, 1996

Difficulty Low Rated by us, not by the source.

Start around April 3, 2027 for a May 3 last frost.

  1. Gibberellic acid soak

  2. Sow and cover

    Temperature: 70°F 21°C

No stated waiting before sowing. Then 2 days to germinate.

76% germination in 2 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Hesperochiron p. 48Public domain
Show the original text
Hesperochiron (Hydrophyllaceae). H. californicum germ. 70 GA-3(76% in 2 d-4 w), 70D(none), and 40(6%)-70D(53% in 1-4 w).
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Hesperochiron p. 48. 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, 1996

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. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

    6 germinated in this phase.

  2. Warm moist stratification

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

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

53% germination in 7–28 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Hesperochiron p. 48Public domain
Show the original text
Hesperochiron (Hydrophyllaceae). H. californicum germ. 70 GA-3(76% in 2 d-4 w), 70D(none), and 40(6%)-70D(53% in 1-4 w).
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Hesperochiron p. 48. 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.