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Calydorea nuda

Family IridaceaeGenus Calydorea

A pale blue-violet flower of six pointed tepals with a yellow center, its three orange anthers curving out over the petals.
FlowerAndrés GonzálezCC BY-SA 4.0

About the plant

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

Habit
bulbous geophytePlants of the World Online
Flower
Pale violetRead from the photograph on this page
Native range
Brazil South, UruguayGBIF 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.

This source reports two treatments. Both are shown.

Protocol 1

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. Warm moist stratification

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

  2. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

    7 germinated in this phase.

  3. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

Steps after step 1 run on after germination.

Germination happens during step 1, in 56 days.

60% germination in 28–56 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Calydorea p. 21Public domain
Show the original text
Calydorea (Iridaceae). Except for C. nuda germ. 70D(60% in 4-8 w)-40(7% in 12th w)-70 and 70L(12% in 8th w). When the sample in 70L was shifted to 70D after 9 w, 76% germ. in 2nd w making a total of 88% germ.
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Calydorea p. 21. 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. Sow and cover

    Temperature: 70°F 21°C Light: light

No stated waiting before sowing. Then 56 days to germinate.

12% germination in 56 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Calydorea p. 21Public domain
Show the original text
Calydorea (Iridaceae). Except for C. nuda germ. 70D(60% in 4-8 w)-40(7% in 12th w)-70 and 70L(12% in 8th w). When the sample in 70L was shifted to 70D after 9 w, 76% germ. in 2nd w making a total of 88% germ.
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Calydorea p. 21. 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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