Mendel’s Gardens

Calandrinia caespitosa

Family MontiaceaeGenus Calandrinia

About the plant

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

Native range
Chile and Argentina, south to Tierra del Fuego

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

Source: GBIF Backbone Taxonomy — Global Biodiversity Information Facility.

This source reports two treatments. Both are shown.

Protocol 1

DerivedN. C. Deno, 1993

Difficulty Moderate Rated by us, not by the source.

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

  1. Cold moist stratification

    Temperature: 40°F 4°C

    33% germinated at 40 itself, in 7-9 weeks.

  2. Warm moist stratification

    Temperature: 70°F 21°C

    A further 29% in 6-10 days after the move.

No stated waiting before sowing. Then 63 days to germinate.

33% germination in 49–63 days.

Start cold. A third comes up at 40 and another 29% after the move to 70.

This source doesn't state how long.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, CalandriniaPublic domain
Show the original text
Calandrinia (Portulacaceae) C. caespitosa germ. 40(33% in 7-9 w)-70(29% in 6-10 d) and 70-40(1/18 in 4th w). Sowing at 70 is deleterious.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Calandrinia. 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

Start around March 8, 2027 for a May 3 last frost.

  1. Warm moist stratification

    Temperature: 70°F 21°C

  2. Cold moist stratification

    Temperature: 40°F 4°C

    One seed of eighteen, in the 4th week.

No stated waiting before sowing. Then 28 days to germinate.

6% germination in 28 days.

Sowing at 70 first is deleterious.

This source doesn't state how long.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, CalandriniaPublic domain
Show the original text
Calandrinia (Portulacaceae) C. caespitosa germ. 40(33% in 7-9 w)-70(29% in 6-10 d) and 70-40(1/18 in 4th w). Sowing at 70 is deleterious.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Calandrinia. Quoted exactly. Every value on this card comes from this record; the step names come from a fixed list.