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Hulsea algida

Alpine Gold · Pacific Hulsea

Family AsteraceaeGenus Hulsea

A single golden-yellow daisy-like flower head against dark granite rock
FlowerDcrjsrCC BY 3.0

About the plant

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

Habit
Perennial, Forb/herbPLANTS Database
Flower
YellowFlora of North America
Native range
California, Idaho, Montana, Nevada, Oregon, WyomingGBIF Backbone Taxonomy

Toxicity is noted only where a source states it. No note here is not a finding of safety.

Sources: PLANTS Database — USDA NRCS; Flora of North America — Flora of North America Editorial Committee; GBIF Backbone Taxonomy — Global Biodiversity Information Facility.

This source reports three treatments. All are shown.

Protocol 1

DerivedN. C. Deno, 1998

Difficulty Low Rated by us, not by the source.

Start around February 16, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on February 15, 2026.

  1. Dry storage

    Duration: 365 daysTemperature: 70°F 21°C

  2. Cold moist stratification

    Temperature: 40°F 4°C

about 12 months from start to step 2. Germination happens during step 2, in 49 days.

95% germination in 14–49 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Hulsea p. 38Public domain
Show the original text
Hulsea (Asteraceae). H. algida germ. 70D(1/13 in 5th w) and 40(6/27 in 6-8 w)-70(1/27). Seeds DS 1 y germ. 40(95% in 2-7 w) and 70D(none). •
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Hulsea p. 38. 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 February 8, 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

    1/27 germinated in this phase.

Steps after step 1 run on after germination.

Germination happens during step 1, in 56 days.

22% germination in 42–56 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Hulsea p. 38Public domain
Show the original text
Hulsea (Asteraceae). H. algida germ. 70D(1/13 in 5th w) and 40(6/27 in 6-8 w)-70(1/27). Seeds DS 1 y germ. 40(95% in 2-7 w) and 70D(none). •
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Hulsea p. 38. 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, 1998

Difficulty Very high Rated by us, not by the source.

Start around March 1, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C Light: dark

No stated waiting before sowing. Then 35 days to germinate.

8% germination in 35 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Hulsea p. 38Public domain
Show the original text
Hulsea (Asteraceae). H. algida germ. 70D(1/13 in 5th w) and 40(6/27 in 6-8 w)-70(1/27). Seeds DS 1 y germ. 40(95% in 2-7 w) and 70D(none). •
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Hulsea p. 38. 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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