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Saxifraga chrysantha

Goldbloom Saxifrage · Golden Saxifrage

Family SaxifragaceaeGenus Saxifraga

Two bright yellow cupped flowers with orange speckles around a green center
FlowerCecelia AlexanderCC0

About the plant

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

Habit
subshrubPlants of the World Online
Habit
Perennial, Forb/herbPLANTS Database
Flower
Bright golden yellowFlora of North America
Native range
Colorado, Montana, New Mexico, Utah, WyomingGBIF 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.

This source reports two treatments. Both are shown.

Protocol 1

DerivedN. C. Deno, 1998

Difficulty Moderate Rated by us, not by the source.

Start around December 1, 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, in 35 days.

62% germination in 35 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Saxifraga p. 60Public domain
Show the original text
Saxifraga (Saxifragaceae). S. chrysantha germ. 7ÖL-40-70L(8/13 in 5th w), 40-70D(2/7 on 3rd d), and none in other treatments.
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Saxifraga p. 60. 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, 1998

Difficulty High Rated by us, not by the source.

Start around January 2, 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 Light: dark

about 3 months from start to step 2. Germination happens during step 2, in 3 days.

29% germination in 3 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Saxifraga p. 60Public domain
Show the original text
Saxifraga (Saxifragaceae). S. chrysantha germ. 7ÖL-40-70L(8/13 in 5th w), 40-70D(2/7 on 3rd d), and none in other treatments.
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Saxifraga p. 60. 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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