Deno’s Garden

Lewisia rediviva

Genus Lewisia

This source reports 4 treatments. All are shown.

Protocol 1

DerivedN. C. Deno, 1993

Difficulty Low Rated by us, not by the source.

  1. Sow outdoors and leave it

    Up in February.

No stated waiting before sowing.

70% germination.

This source doesn't state how long.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Lewisia p. 166Public domain
Show the original text
Lewisia (Portulacaceae). Germination of L. rediviva germ. best when sown at low T as shown by 40(65% in 2-7 w) and 70% in February in outdoor treatment. A prior 3 m at 70 or DS is detrimental as shown by 40(15%) for seed DS 6 m at 70 and 70-40(8%) for fresh seed. The cotyledons develop completely at 40.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Lewisia p. 166. 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, 1993

Difficulty Moderate Rated by us, not by the source.

Start around February 15, 2027 for a May 3 last frost.

  1. Cold moist stratification

    Temperature: 40°F 4°C

No stated waiting before sowing. Then 49 days to germinate.

65% germination in 14–49 days.

This source doesn't state how long.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Lewisia p. 166Public domain
Show the original text
Lewisia (Portulacaceae). Germination of L. rediviva germ. best when sown at low T as shown by 40(65% in 2-7 w) and 70% in February in outdoor treatment. A prior 3 m at 70 or DS is detrimental as shown by 40(15%) for seed DS 6 m at 70 and 70-40(8%) for fresh seed. The cotyledons develop completely at 40.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Lewisia p. 166. 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 3

DerivedN. C. Deno, 1993

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. Dry storage

    Duration: 180 daysTemperature: 70°F 21°C

  2. Cold moist stratification

    Temperature: 40°F 4°C

about 6 months from start to sowing. Germination time not stated; 21 days assumed.

15% germination.

This source doesn't state how long.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Lewisia p. 166Public domain
Show the original text
Lewisia (Portulacaceae). Germination of L. rediviva germ. best when sown at low T as shown by 40(65% in 2-7 w) and 70% in February in outdoor treatment. A prior 3 m at 70 or DS is detrimental as shown by 40(15%) for seed DS 6 m at 70 and 70-40(8%) for fresh seed. The cotyledons develop completely at 40.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Lewisia p. 166. 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 4

DerivedN. C. Deno, 1993

Difficulty Very 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. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

  2. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

about 6 months from start to sowing. Germination time not stated; 21 days assumed.

8% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Lewisia p. 166Public domain
Show the original text
Lewisia (Portulacaceae). Germination of L. rediviva germ. best when sown at low T as shown by 40(65% in 2-7 w) and 70% in February in outdoor treatment. A prior 3 m at 70 or DS is detrimental as shown by 40(15%) for seed DS 6 m at 70 and 70-40(8%) for fresh seed. The cotyledons develop completely at 40.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Lewisia p. 166. 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.