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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
Flower Pale violet, lilac Flora of Pakistan
Native range Afghanistan, Kazakhstan, Kirgizstan, Pakistan, Tadzhikistan, Uzbekistan and elsewhere 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; Flora of Pakistan — S. I. Ali and M. Qaiser (eds.); GBIF Backbone Taxonomy — Global Biodiversity Information Facility.
This source reports 4 treatments. All are shown.
Protocol 1 N. C. Deno, 1993 Difficulty Low Rated by us, not by the source.
Start around September 10, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on September 9, 2026.
1 Dry storage
Duration: 180 days · Temperature: 70°F 21°C
2 Sow and cover
Temperature: 70°F 21°C · Light: either
about 6 months from start to sowing. Then 28 days to germinate.
90% germination in 7–28 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. pamirica (F) germ. best with seed DS 6 m at 70 in 70(90% in 1-4 w). Fresh seed germ 70-40-70(80% in 1-5 d) indicating that DS is beneficial although unfortunately the data were not taken on the same set of seeds. Light had no effect. P; parryi (P) germ. best in a 40-70 pattern as shown by 40-70(32% in 4 d-6 w) and 70(2%)-40. 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 Moderate Rated by us, not by the source.
Start around October 3, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on October 2, 2026.
1 Warm moist stratification
Duration: 90 days · Temperature: 70°F 21°C · Light: either
2 Cold moist stratification
Duration: 90 days · Temperature: 40°F 4°C · Light: either
3 Warm moist stratification
Duration: 90 days · Temperature: 70°F 21°C · Light: either
about 6 months from start to step 3. Germination happens during step 3, in 5 days.
80% germination in 1–5 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. pamirica (F) germ. best with seed DS 6 m at 70 in 70(90% in 1-4 w). Fresh seed germ 70-40-70(80% in 1-5 d) indicating that DS is beneficial although unfortunately the data were not taken on the same set of seeds. Light had no effect. P; parryi (P) germ. best in a 40-70 pattern as shown by 40-70(32% in 4 d-6 w) and 70(2%)-40. 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 Moderate Rated by us, not by the source.
Start around November 24, 2026 for a May 3 last frost.
1 Cold moist stratification
Duration: 90 days · Temperature: 40°F 4°C · Light: either
2 Warm moist stratification
Duration: 90 days · Temperature: 70°F 21°C · Light: either
about 3 months from start to step 2. Germination happens during step 2, in 42 days.
32% germination in 4–42 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. pamirica (F) germ. best with seed DS 6 m at 70 in 70(90% in 1-4 w). Fresh seed germ 70-40-70(80% in 1-5 d) indicating that DS is beneficial although unfortunately the data were not taken on the same set of seeds. Light had no effect. P; parryi (P) germ. best in a 40-70 pattern as shown by 40-70(32% in 4 d-6 w) and 70(2%)-40. 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 4 N. C. Deno, 1993 Difficulty Very high Rated by us, not by the source.
Start around March 15, 2027 for a May 3 last frost.
1 Warm moist stratification
Duration: 90 days · Temperature: 70°F 21°C · Light: either
2 Cold moist stratification
Duration: 90 days · Temperature: 40°F 4°C · Light: either
Steps after step 1 run on after germination.
Germination happens during step 1; time not stated, 21 days assumed.
2% germination.
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. pamirica (F) germ. best with seed DS 6 m at 70 in 70(90% in 1-4 w). Fresh seed germ 70-40-70(80% in 1-5 d) indicating that DS is beneficial although unfortunately the data were not taken on the same set of seeds. Light had no effect. P; parryi (P) germ. best in a 40-70 pattern as shown by 40-70(32% in 4 d-6 w) and 70(2%)-40. 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.
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