Deno’s Garden

Rudbeckia occidentalis

Genus Rudbeckia

This source reports two treatments. Both are shown.

Protocol 1

DerivedN. C. Deno, 1998

Difficulty Low Rated by us, not by the source.

Start around March 22, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on March 21, 2026.

  1. Dry storage

    Duration: 365 daysTemperature: 70°F 21°C

  2. Sow and cover

    Temperature: 70°F 21°C Light: dark

about 12 months from start to sowing. Then 15 days to germinate.

88% germination in 4–15 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Rudbeckia p. 59Public domain
Show the original text
Rudbeckia (Asteraceae). ^ R. occidentalis germ. 70D(71% in 4-10 w) for fresh seeds and 70D(88% in 4-15 d) for seeds DS 1 y. „ • . -
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Rudbeckia p. 59. 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 January 25, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C Light: dark

No stated waiting before sowing. Then 70 days to germinate.

71% germination in 28–70 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Rudbeckia p. 59Public domain
Show the original text
Rudbeckia (Asteraceae). ^ R. occidentalis germ. 70D(71% in 4-10 w) for fresh seeds and 70D(88% in 4-15 d) for seeds DS 1 y. „ • . -
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Rudbeckia p. 59. 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.