Deno’s Garden

Lewisia brachycalyx

Genus Lewisia

This source reports two treatments. Both are shown.

Protocol 1

DerivedN. C. Deno, 1993

Difficulty Low Rated by us, not by the source.

Start around January 25, 2027 for a May 3 last frost.

  1. Cold moist stratification

    Temperature: 40°F 4°C

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

100% germination in 70 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. brachycalyx germ. 70-40(2/3 in 10th w) and 40(6/6 in 10th w).
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 July 30, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on July 29, 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. Then 70 days to germinate.

67% germination in 70 days.

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. brachycalyx germ. 70-40(2/3 in 10th w) and 40(6/6 in 10th w).
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.