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Sedum lanceolatum

Genus Sedum

Clusters of yellow buds tipping fleshy stems crowded with small succulent leaves flushed orange-red, among broken rock.
FlowerWalter Siegmund (talk)CC BY-SA 3.0

This source reports three treatments. All are shown.

Protocol 1

DerivedN. C. Deno, 1993

Difficulty Moderate Rated by us, not by the source.

Start around April 1, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on March 31, 2026.

  1. Dry storage

    Duration: 180 days

  2. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

    3 germinated in this phase.

  3. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

about 12 months from start to sowing. Then 10 days to germinate.

56% germination in 1–10 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Sedum p. 213Public domain
Show the original text
Sedum (Crassulaceae). All Sedums tolerated OS and germ. largely at 70. Germination in S. lanceolatum germ. 70(30-40% in 1-8 w) and 40(3%)-70(56% in 1-10 d) using seed DS 6 m at 70 or 40. Fresh seed germ. less in 40(13%)-70(53%) and even less and more extended when sown at 70 indicating that the species is D-70.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Sedum p. 213. 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 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

    13 germinated in this phase.

  2. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

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

53% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Sedum p. 213Public domain
Show the original text
Sedum (Crassulaceae). All Sedums tolerated OS and germ. largely at 70. Germination in S. lanceolatum germ. 70(30-40% in 1-8 w) and 40(3%)-70(56% in 1-10 d) using seed DS 6 m at 70 or 40. Fresh seed germ. less in 40(13%)-70(53%) and even less and more extended when sown at 70 indicating that the species is D-70.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Sedum p. 213. 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 Moderate Rated by us, not by the source.

Start around August 13, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on August 12, 2026.

  1. Dry storage

    Duration: 180 days

  2. Sow and cover

    Temperature: 70°F 21°C

about 6 months from start to sowing. Then 56 days to germinate.

30% germination in 7–56 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Sedum p. 213Public domain
Show the original text
Sedum (Crassulaceae). All Sedums tolerated OS and germ. largely at 70. Germination in S. lanceolatum germ. 70(30-40% in 1-8 w) and 40(3%)-70(56% in 1-10 d) using seed DS 6 m at 70 or 40. Fresh seed germ. less in 40(13%)-70(53%) and even less and more extended when sown at 70 indicating that the species is D-70.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Sedum p. 213. 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.

How each step is done, in Deno’s words, and what Verified and Derived mean.

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