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Nemastylis tenuis

Southwestern Pleatleaf

Family IridaceaeGenus Nemastylis

A white crocus-like flower opened flat, its six broad tepals around bright yellow anthers and a pale divided style.
FlowerGaiacoyoteCC0

About the plant

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

Habit
bulbous geophytePlants of the World Online
Habit
Perennial, Forb/herbPLANTS Database
Flower
Blue, whiteWikipedia
Native range
Arizona, Guatemala, Honduras, Mexico Central, Mexico Northeast, Mexico Southwest 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; Wikipedia — Wikipedia contributors; GBIF Backbone Taxonomy — Global Biodiversity Information Facility.

Worth knowing

This source reports three treatments. All are shown.

Protocol 1

DerivedN. C. Deno, 1993

Difficulty High Rated by us, not by the source.

Start around June 5, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on June 4, 2026.

  1. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  2. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

  3. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  4. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

about 9 months from start to step 4. Germination happens during step 4, in 35 days.

20% germination in 35 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Nemastylis p. 181Public domain
Show the original text
Nemastylis (lrldaceae). Germination in N. pringlei germ. 70(1/10 in 4th w) and 40-70-40-70(2/10 in 5th w).
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Nemastylis p. 181. 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

Difficulty High Rated by us, not by the source.

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

  1. Sow and cover

    Temperature: 70°F 21°C

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

17% germination in 21 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Nemastylis p. 181Public domain
Show the original text
Nemastylis (lrldaceae). Germination in N. tenuis germ. 70(1/6 in 3rd w). Nemophila (Hydrophyllaceae)
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Nemastylis p. 181. 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, 1993

Difficulty High Rated by us, not by the source.

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

  1. Sow and cover

    Temperature: 70°F 21°C

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

10% germination in 28 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Nemastylis p. 181Public domain
Show the original text
Nemastylis (lrldaceae). Germination in N. pringlei germ. 70(1/10 in 4th w) and 40-70-40-70(2/10 in 5th w).
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Nemastylis p. 181. 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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