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Ranunculus glacialis

Glacier Buttercup · Glacier Crowfoot

Family RanunculaceaeGenus Ranunculus

A white cup-shaped flower with a dense yellow center, on a red-tinged stalk above fleshy three-lobed leaves on stony ground.
FlowerAlinjaCC 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
WhiteFlora of North America
Native range
Alaska, Austria, Czechia-Slovakia, Finland, France, Føroyar 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

  • The glacier buttercup is described as one of the highest-climbing plants in the Alps, flowering at over 4,000 m. Its flowers open white and later turn pink or reddish. In Finland it is endangered and protected. Wikipedia: Ranunculus glacialis

This source reports three treatments. All are shown.

Protocol 1

DerivedN. C. Deno, 1996

Difficulty Low Rated by us, not by the source.

Start around March 15, 2027 for a May 3 last frost.

  1. Gibberellic acid soak

  2. Sow and cover

    Temperature: 70°F 21°C

No stated waiting before sowing. Then 21 days to germinate.

100% germination in 21 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Ranunculus p. 70Public domain
Show the original text
Ranunculus (Ranunculaceae). R. glacialis germ. 70 GA-3(100% in 3rd w) and none in 70D, 70L, 40, or OT. Seeds DS 1 y were dead.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Ranunculus p. 70. 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, 1996

  1. Sow and cover

    Temperature: 70°F 21°C Light: dark

No stated waiting before sowing.

0% germination.

Nothing germinated at 70.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Ranunculus p. 70Public domain
Show the original text
Ranunculus (Ranunculaceae). R. glacialis germ. 70 GA-3(100% in 3rd w) and none in 70D, 70L, 40, or OT. Seeds DS 1 y were dead.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Ranunculus p. 70. Quoted exactly. Every value on this card comes from this record; the step names come from a fixed list.

Protocol 3

DerivedN. C. Deno, 1996

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

  1. Sow outdoors and leave it

    Nothing germinated outdoors.

No stated waiting before sowing.

0% germination.

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

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Ranunculus p. 70Public domain
Show the original text
Ranunculus (Ranunculaceae). R. glacialis germ. 70 GA-3(100% in 3rd w) and none in 70D, 70L, 40, or OT. Seeds DS 1 y were dead.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Ranunculus p. 70. 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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