Deno’s Garden

Petroselinum crispum

Genus Petroselinum

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 12, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on March 12, 2023.

  1. Dry storage

    Duration: 1460 daysTemperature: 70°F 21°C

  2. Cold moist stratification

    Temperature: 40°F 4°C

about 4 years from start to sowing. Then 25 days to germinate.

71% germination in 19–25 days.

This source doesn't state how long.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Petroselinum p. 54Public domain
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Petroselinum (Apiaceae). P. hortense (Parsley) germ, in 4th w in 70D confirming an earlier report (2n Ed.). This confirmation is reported because there are numerous popular articles claiming that parsley is difficult to germinate. A sample DS 4 y germ. 72% in 10-18 d in either 70D or 70L and 40(71 % in 19-25 d).
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Petroselinum p. 54. 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 March 16, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on March 16, 2023.

  1. Dry storage

    Duration: 1460 daysTemperature: 70°F 21°C

  2. Sow and cover

    Temperature: 70°F 21°C Light: dark

about 4 years from start to sowing. Then 21 days to germinate.

55% germination in 7–21 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Petroselinum p. 54Public domain
Show the original text
Petroselinum (Apiaceae). P. crispum DS 4 y germ. 70D(55% in 1-3 w).
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Petroselinum p. 54. 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.