Deno’s GardenMy Garden

Androsace laggeri

Pink Rock-jasmine

Family PrimulaceaeGenus Androsace

A small cushion of narrow green leaves carrying white flowers on thin stalks, in a gravel bed beside a black plant label.
The whole plantSvarði2CC BY-SA 4.0

About the plant

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

Habit
subshrubPlants of the World Online
Flower
WhiteRead from the photograph on this page
Native range
France, SpainGBIF 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.

Worth knowing

  • The pink rock jasmine of the central Pyrenees holds the RHS Award of Garden Merit, as Androsace carnea subsp. laggeri. Wikipedia: Androsace laggeri

This source reports two treatments. Both are shown.

Protocol 1

DerivedN. C. Deno, 1998

Difficulty Low Rated by us, not by the source.

Start around January 11, 2027 for a May 3 last frost.

  1. Cold moist stratification

    Temperature: 40°F 4°C

Germination happens during step 1, in 84 days.

100% germination in 35–84 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Androsace p. 13Public domain
Show the original text
Androsace (Primulaceae). A. carnea alba germ. 40(100% in 5-12 w) and 70L-40(100% in 10th w). Seeds DS 1 y failed to germinate and are presumed dead.
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Androsace p. 13. 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 Moderate Rated by us, not by the source.

Start around October 28, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on October 27, 2026.

  1. Warm moist stratification

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

  2. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

about 3 months from start to step 2. Germination happens during step 2, in 70 days.

100% germination in 70 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Androsace p. 13Public domain
Show the original text
Androsace (Primulaceae). A. carnea alba germ. 40(100% in 5-12 w) and 70L-40(100% in 10th w). Seeds DS 1 y failed to germinate and are presumed dead.
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Androsace p. 13. 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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