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Hosta sieboldii

Siebold's Plantain Lily · Small-leaved Plantain Lily

Family AsparagaceaeGenus Hosta

Lavender trumpet flowers striped with darker veins, hanging from an arching stem with white stamens protruding.
FlowerYoshimasa UchiyamaCC BY 4.0

About the plant

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

Habit
perennialPlants of the World Online
Flower
LavenderRead from the photograph on this page
Native range
Japan, Kuril Is., SakhalinGBIF 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, 1993

Difficulty Low Rated by us, not by the source.

Start around August 13, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on August 12, 2026.

  1. Dry storage

    Duration: 180 daysTemperature: 70°F 21°C

  2. Cold moist stratification

    Temperature: 40°F 4°C

about 6 months from start to step 2. Germination happens during step 2, in 56 days.

75% germination in 56 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Hosta p. 153Public domain
Show the original text
Hosta (Liliaceae). Germination was hypogeal. The seed slowly deteriorated on OS at 70. H. sieboldi germ. 70(73% in 1-3w) and 40(75% in 8th w) using seed that had been DS outdoors until February. This seed was given an additional 6 m DS at 70 after which it germ. 40(55% in 6-10 w) and 70(none).
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Hosta p. 153. 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 Low Rated by us, not by the source.

Start around September 17, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on September 16, 2026.

  1. Dry storage

    Duration: 180 daysTemperature: 70°F 21°C

  2. Sow and cover

    Temperature: 70°F 21°C

about 6 months from start to sowing. Then 21 days to germinate.

73% germination in 7–21 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Hosta p. 153Public domain
Show the original text
Hosta (Liliaceae). Germination was hypogeal. The seed slowly deteriorated on OS at 70. H. sieboldi germ. 70(73% in 1-3w) and 40(75% in 8th w) using seed that had been DS outdoors until February. This seed was given an additional 6 m DS at 70 after which it germ. 40(55% in 6-10 w) and 70(none).
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Hosta p. 153. 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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