Deno’s Garden

Silene flos-cuculi

Genus Silene

This source reports two treatments. Both are shown.

Protocol 1

DerivedN. C. Deno, 1996

Difficulty Moderate Rated by us, not by the source.

Start around September 29, 2026 for a May 3 last frost.

  1. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  2. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

about 6 months from start to sowing. Then 8 days to germinate.

64% germination in 3–8 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Lychnis p. 55Public domain
Show the original text
Lychnis (Caryophyllaceae). L. flos-cuculi germ. 100% in 4-15 d in either 70D or 70L and 40-70(64% in 3-8 d). Neither GA-3 or DS 6 m had any effect. Seeds DS 2 y germ. 70D(18% in 3rd w) showing extensive dying.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Lychnis p. 55. 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 High Rated by us, not by the source.

Start around March 16, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on March 15, 2025.

  1. Dry storage

    Duration: 730 daysTemperature: 70°F 21°C

  2. Sow and cover

    Temperature: 70°F 21°C Light: dark

about 2 years from start to sowing. Then 21 days to germinate.

18% germination in 21 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Lychnis p. 55Public domain
Show the original text
Lychnis (Caryophyllaceae). L. flos-cuculi germ. 100% in 4-15 d in either 70D or 70L and 40-70(64% in 3-8 d). Neither GA-3 or DS 6 m had any effect. Seeds DS 2 y germ. 70D(18% in 3rd w) showing extensive dying.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Lychnis p. 55. 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.