Deno’s Garden

Draba hyperborea

Genus Draba

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 February 22, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C Light: dark

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

44% germination in 7–42 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Schivereckia p. 60Public domain
Show the original text
Schivereckia (Brassicaceae). S. monticola germ. 70D(44% in 1-6 w) and 40-70D(18% in 1-3 w). Seeds DS 1 y were largely dead.
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Schivereckia p. 60. 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 High Rated by us, not by the source.

Start around September 17, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on September 16, 2026.

  1. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  2. Warm moist stratification

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

about 6 months from start to sowing. Then 21 days to germinate.

18% germination in 7–21 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Schivereckia p. 60Public domain
Show the original text
Schivereckia (Brassicaceae). S. monticola germ. 70D(44% in 1-6 w) and 40-70D(18% in 1-3 w). Seeds DS 1 y were largely dead.
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Schivereckia p. 60. 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.