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The whole plant Arkadiusz Nowak, Marcin Nobis, Sylwia Nowak, Agnieszka Nobis, Anna Wróbel, Sebastian Świerszcz, Ewelina Klichowska, Iwona Dembicz & Grzegorz Kusza CC BY 4.0 About the plant What it is and where it grows — not part of any germination protocol.
Habit perennial Plants of the World Online
Native range Kirgizstan, Tadzhikistan, Uzbekistan GBIF Backbone Taxonomy Toxicity is noted only where a source states it. No note here is not a finding of safety.
Sources: Plants of the World Online — Royal Botanic Gardens, Kew; GBIF Backbone Taxonomy — Global Biodiversity Information Facility.
This source reports three treatments. All are shown.
Protocol 1 N. C. Deno, 1993 Difficulty Moderate Rated by us, not by the source.
Start around March 15, 2027 for a May 3 last frost.
1 Sow and cover
Temperature: 70°F 21°C · Light: light
No stated waiting before sowing. Then 21 days to germinate.
50% germination in 21 days.
Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Primula p. 197Public domain Show the original text Primula. (Primulaceae). The discovery of a photorequirement in P. iljinski (F) germ. 70L(2/4 in 3rd w), 70D(1/20 in 2nd w)-40-70D(1/20 on 8th d), and 40-70(1/8 in 2nd w). It is suspected that the seeds had been DS for several years. Seed Germination Theory and Practice, 2nd ed., Ch. 20, Primula p. 197. 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 N. C. Deno, 1993 Difficulty High Rated by us, not by the source.
Start around December 22, 2026 for a May 3 last frost.
1 Cold moist stratification
Duration: 90 days · Temperature: 40°F 4°C
2 Warm moist stratification
Duration: 90 days · Temperature: 70°F 21°C
about 3 months from start to step 2. Germination happens during step 2, in 14 days.
12% germination in 14 days.
Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Primula p. 197Public domain Show the original text Primula. (Primulaceae). The discovery of a photorequirement in P. iljinski (F) germ. 70L(2/4 in 3rd w), 70D(1/20 in 2nd w)-40-70D(1/20 on 8th d), and 40-70(1/8 in 2nd w). It is suspected that the seeds had been DS for several years. Seed Germination Theory and Practice, 2nd ed., Ch. 20, Primula p. 197. 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 N. C. Deno, 1993 Difficulty Very high Rated by us, not by the source.
Start around March 22, 2027 for a May 3 last frost.
1 Warm moist stratification
Duration: 90 days · Temperature: 70°F 21°C · Light: dark
2 Cold moist stratification
Duration: 90 days · Temperature: 40°F 4°C
3 Warm moist stratification
Duration: 90 days · Temperature: 70°F 21°C · Light: dark
1/20 germinated in this phase.
Steps after step 1 run on after germination.
Germination happens during step 1, in 14 days.
5% germination in 14 days.
Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Primula p. 197Public domain Show the original text Primula. (Primulaceae). The discovery of a photorequirement in P. iljinski (F) germ. 70L(2/4 in 3rd w), 70D(1/20 in 2nd w)-40-70D(1/20 on 8th d), and 40-70(1/8 in 2nd w). It is suspected that the seeds had been DS for several years. Seed Germination Theory and Practice, 2nd ed., Ch. 20, Primula p. 197. 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.
Germination trials Readers’ own records of sowing this species, published after review. Share your trial · All trials
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