Deno’s Garden

Trollius ledebourii

Genus Trollius

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 March 15, 2027 for a May 3 last frost.

  1. Gibberellic acid soak

  2. Sow and cover

    Temperature: 70°F 21°C

No stated waiting before sowing. Then 21 days to germinate.

38% germination in 21 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Trollius p. 225Public domain
Show the original text
Trollius (Ranunculaceae). Nikolaeva (ref. 10) reported that several species had germination stimulated by GA-3. Robert and Brigitte Stewart and myself have confirmed these results with several species. However, the seedlings decline in vigor after producing a true leaf or two so that at present GA-3 cannot be recommended for the production of Trollius plants. T. ledebouri germ. 70 GA-3(38% in 3rd w), none in 700 or 70L, and 40-70(6%)- 40(16%). A prior 3 m at 40 or a prior 70-40 cycle had no effect on the germination in 70 GA-3. Seeds placed outdoors in October germ. 6% in November and 14% in April. The outdoor treatment is recommended, see general comments on .Trollius.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Trollius p. 225. 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 High Rated by us, not by the source.

Start around June 19, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on June 18, 2026.

  1. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  2. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

    6 germinated in this phase.

  3. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

about 9 months from start to sowing. Germination time not stated; 21 days assumed.

16% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Trollius p. 225Public domain
Show the original text
Trollius (Ranunculaceae). Nikolaeva (ref. 10) reported that several species had germination stimulated by GA-3. Robert and Brigitte Stewart and myself have confirmed these results with several species. However, the seedlings decline in vigor after producing a true leaf or two so that at present GA-3 cannot be recommended for the production of Trollius plants. T. ledebouri germ. 70 GA-3(38% in 3rd w), none in 700 or 70L, and 40-70(6%)- 40(16%). A prior 3 m at 40 or a prior 70-40 cycle had no effect on the germination in 70 GA-3. Seeds placed outdoors in October germ. 6% in November and 14% in April. The outdoor treatment is recommended, see general comments on .Trollius.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Trollius p. 225. 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 Very high Rated by us, not by the source.

Sow around October 2026 — a date the source gives, not one counted back from a May 3 last frost.

  1. Sow outdoors and leave it

    Sown outdoors in October; up in November.

No stated waiting before sowing. Then 30 days to germinate.

6% germination in 30 days.

This source doesn't state how long.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Trollius p. 225Public domain
Show the original text
Trollius (Ranunculaceae). Nikolaeva (ref. 10) reported that several species had germination stimulated by GA-3. Robert and Brigitte Stewart and myself have confirmed these results with several species. However, the seedlings decline in vigor after producing a true leaf or two so that at present GA-3 cannot be recommended for the production of Trollius plants. T. ledebouri germ. 70 GA-3(38% in 3rd w), none in 700 or 70L, and 40-70(6%)- 40(16%). A prior 3 m at 40 or a prior 70-40 cycle had no effect on the germination in 70 GA-3. Seeds placed outdoors in October germ. 6% in November and 14% in April. The outdoor treatment is recommended, see general comments on .Trollius.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Trollius p. 225. 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.