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Saxifraga flagellaris

Spider Saxifrage · Spider-legged Saxifrage · Stoloniferous Saxifrage · Whiplash Saxifrage

Family SaxifragaceaeGenus Saxifraga

Two small yellow five-petalled flowers with orange centers, on short red stems among red-green succulent rosettes and long red runners.
FlowerBjoertvedtCC 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
Habit
Perennial, Forb/herbPLANTS Database
Flower
YellowFlora of North America
Native range
Alaska, Alberta, Arizona, British Columbia, Buryatiya, Chita 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; PLANTS Database — USDA NRCS; Flora of North America — Flora of North America Editorial Committee; GBIF Backbone Taxonomy — Global Biodiversity Information Facility.

Worth knowing

  • Whiplash saxifrage is also called spider saxifrage or "spider plant", though that name more often means the unrelated houseplant Chlorophytum comosum. Wikipedia: Saxifraga flagellaris

This source reports two treatments. Both are shown.

Protocol 1

DerivedN. C. Deno, 1993

Difficulty High 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. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

  2. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  3. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

about 6 months from start to step 3. Germination happens during step 3; time not stated, 21 days assumed.

62% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Saxifraga p. 211Public domain
Show the original text
Saxifraga (Saxifragaceae). The stimulation of germination by GA-3 in S. flagellaris germ. 70-40-70(62%) and 40(4%)-70.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Saxifraga p. 211. 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 Very high Rated by us, not by the source.

Start around March 15, 2027 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

Steps after step 1 run on after germination.

Germination happens during step 1; time not stated, 21 days assumed.

4% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Saxifraga p. 211Public domain
Show the original text
Saxifraga (Saxifragaceae). The stimulation of germination by GA-3 in S. flagellaris germ. 70-40-70(62%) and 40(4%)-70.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Saxifraga p. 211. 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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