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Trollius pumilus

Dwarf Globeflower

Family RanunculaceaeGenus Trollius

A low cluster of flat yellow flowers with green centers and orange stamens, over finely divided dark green leaves.
FlowerGhislain118 http://www.fleurs-des-montagnes.netCC BY-SA 3.0

About the plant

What it is and where it grows — not part of any germination protocol.

Habit
perennialPlants of the World Online
Flower
YellowRead from the photograph on this page
Native range
China North-Central, China South-Central, East Himalaya, Myanmar, Nepal, Qinghai and elsewhereGBIF 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; Read from the photograph on this page — Deno's Garden; GBIF Backbone Taxonomy — Global Biodiversity Information Facility.

This source reports 5 treatments. All are shown.

Protocol 1

DerivedN. C. Deno, 1993

Difficulty Low Rated by us, not by the source.

Start around March 8, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C Light: light

No stated waiting before sowing. Then 28 days to germinate.

100% germination in 28 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. pumilus germ. 70(5/9 in 12-20 d), 40-70(2/9), and 4/7 in outdoor treatment. A second sample of T. pumilus collected in the wild in Nepal had much finer seed and a different behavior. This latter sample required light and germ. 70L(100% in -4 w), 70D(none), 40-70L(100%), and 40-70D(none). After 4 w the 700 sample was shifted to 70L whereupon 100% germ. in 3rd w. The two sample are presumably different species as judged by the difference in size of their seeds. It dàes show that photoeffects must be tested in 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 Moderate Rated by us, not by the source.

Start around December 15, 2026 for a May 3 last frost.

  1. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  2. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C Light: light

about 3 months from start to step 2. Germination happens during step 2; time not stated, 21 days assumed.

100% 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. pumilus germ. 70(5/9 in 12-20 d), 40-70(2/9), and 4/7 in outdoor treatment. A second sample of T. pumilus collected in the wild in Nepal had much finer seed and a different behavior. This latter sample required light and germ. 70L(100% in -4 w), 70D(none), 40-70L(100%), and 40-70D(none). After 4 w the 700 sample was shifted to 70L whereupon 100% germ. in 3rd w. The two sample are presumably different species as judged by the difference in size of their seeds. It dàes show that photoeffects must be tested in 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 Moderate Rated by us, not by the source.

  1. Sow outdoors and leave it

No stated waiting before sowing.

57% germination.

This source doesn't state how long step 1 lasts.

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. pumilus germ. 70(5/9 in 12-20 d), 40-70(2/9), and 4/7 in outdoor treatment. A second sample of T. pumilus collected in the wild in Nepal had much finer seed and a different behavior. This latter sample required light and germ. 70L(100% in -4 w), 70D(none), 40-70L(100%), and 40-70D(none). After 4 w the 700 sample was shifted to 70L whereupon 100% germ. in 3rd w. The two sample are presumably different species as judged by the difference in size of their seeds. It dàes show that photoeffects must be tested in 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 4

DerivedN. C. Deno, 1993

Difficulty Moderate Rated by us, not by the source.

Start around March 16, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C

No stated waiting before sowing. Then 20 days to germinate.

56% germination in 12–20 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. pumilus germ. 70(5/9 in 12-20 d), 40-70(2/9), and 4/7 in outdoor treatment. A second sample of T. pumilus collected in the wild in Nepal had much finer seed and a different behavior. This latter sample required light and germ. 70L(100% in -4 w), 70D(none), 40-70L(100%), and 40-70D(none). After 4 w the 700 sample was shifted to 70L whereupon 100% germ. in 3rd w. The two sample are presumably different species as judged by the difference in size of their seeds. It dàes show that photoeffects must be tested in 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 5

DerivedN. C. Deno, 1993

Difficulty High Rated by us, not by the source.

Start around December 15, 2026 for a May 3 last frost.

  1. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  2. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

about 3 months from start to step 2. Germination happens during step 2; time not stated, 21 days assumed.

22% 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. pumilus germ. 70(5/9 in 12-20 d), 40-70(2/9), and 4/7 in outdoor treatment. A second sample of T. pumilus collected in the wild in Nepal had much finer seed and a different behavior. This latter sample required light and germ. 70L(100% in -4 w), 70D(none), 40-70L(100%), and 40-70D(none). After 4 w the 700 sample was shifted to 70L whereupon 100% germ. in 3rd w. The two sample are presumably different species as judged by the difference in size of their seeds. It dàes show that photoeffects must be tested in 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.

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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