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Ipheion uniflorum

Spring Starflower · Spring Star

Family AmaryllidaceaeGenus Ipheion

A white six-petalled star flower with a green-gold center, among narrow grassy leaves
FlowerKENPEICC BY-SA 3.0

About the plant

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

The plant

Habit
BulbExtension Gardener Plant Toolbox
Habit
bulbous geophytePlants of the World Online
Height
3-6 in10-15 cmExtension Gardener Plant Toolbox
Spread
3-6 in10-15 cmExtension Gardener Plant Toolbox
Flower
Blue, Purple/Lavender, WhiteExtension Gardener Plant Toolbox
Blooms
SpringExtension Gardener Plant Toolbox
Native range
Argentina Northeast, UruguayGBIF Backbone Taxonomy
Hardiness zones
5-9Extension Gardener Plant Toolbox

Growing conditions

Sun
Full sun; Partial ShadeExtension Gardener Plant Toolbox
Soil
Clay, Loam (Silt), Sand, Shallow RockyExtension Gardener Plant Toolbox
Soil pH
Acid (<6.0), Neutral (6.0-8.0)Extension Gardener Plant Toolbox
Moisture
Good Drainage, Moist, Occasionally DryExtension Gardener Plant Toolbox

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

Sources: Extension Gardener Plant Toolbox — NC State Extension; Plants of the World Online — Royal Botanic Gardens, Kew; GBIF Backbone Taxonomy — Global Biodiversity Information Facility.

Worth knowing

This source reports two treatments. Both are shown.

Protocol 1

DerivedN. C. Deno, 1996

Difficulty High Rated by us, not by the source.

Start around August 27, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on August 26, 2026.

  1. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  2. Warm moist stratification

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

  3. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

about 6 months from start to step 3. Germination happens during step 3, in 42 days.

38% germination in 28–42 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Ipheion p. 49Public domain
Show the original text
Ipheion (Liliaceae). I. uniflorum germ. 70D(1/10 in 16 d)-40-70 and 40-70D- 40(3/8 in 4-6 w).
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Ipheion p. 49. 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

Difficulty High Rated by us, not by the source.

Start around March 20, 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

  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 16 days.

10% germination in 16 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Ipheion p. 49Public domain
Show the original text
Ipheion (Liliaceae). I. uniflorum germ. 70D(1/10 in 16 d)-40-70 and 40-70D- 40(3/8 in 4-6 w).
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Ipheion p. 49. 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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