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Hylomecon japonicum

Forest Poppy

Family PapaveraceaeGenus Hylomecon

Also published as Hylomecon japonica. You are in the right place.

A single yellow flower of five broad overlapping petals around a dense boss of orange stamens, with a furry green bud beside it.
FlowerAlpsdakeCC BY-SA 3.0

About the plant

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

Flower
YellowRead from the photograph on this page
Native range
China North-Central, China South-Central, China Southeast, JapanGBIF Backbone Taxonomy

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

Sources: Read from the photograph on this page — Deno's Garden; GBIF Backbone Taxonomy — Global Biodiversity Information Facility.

Worth knowing

Protocol

DerivedN. C. Deno, 1998

Difficulty Moderate Rated by us, not by the source.

  1. Gibberellic acid soak

  2. Sow and cover

    Temperature: 70°F 21°C

No stated waiting before sowing. Then 49 days to germinate.

40% germination in 28–49 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Hylomecon p. 39Public domain
Show the original text
Hylomecon (Papaveraceae). H. japonicum germ. 70 GA-3(40% in 4-7 w). Germination in 70D, 70L, or 40-70 was 0-5%. The seeds split and expand a week or two before radicle development begins.
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Hylomecon p. 39. 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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