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Japanese Wood Poppy Wikimedia Commons
Papaveraceae

Japanese Wood Poppy

Hylomecon japonica

Woodland sunshine and gentle discovery.

Family
Papaveraceae
Genus
Hylomecon
Native to
Japan, Korea, northeastern China
Bloom season
Spring
Type
herbaceous perennial
Height
20–30 cm
Sunlight
part shade to full shade
Soil
moist, humus-rich, well-drained
Water
medium
Hardiness
5–7
Lifespan
perennial

Did you know

  • Japanese wood poppy is one of the few members of the poppy family that thrives in deep shade.
  • The genus name Hylomecon comes from Greek 'hyle' (forest) and 'mecon' (poppy) — literally 'forest poppy.'
  • It blooms prolifically in spring and then retreats to a tidy clump of attractive divided foliage for the rest of the season.
  • Despite being in the poppy family, it does not produce opium alkaloids — its sap is yellow, not white.
  • It spreads slowly by rhizomes and can form large colonies in ideal conditions over many years.

Color meanings

Yellow

joyful serenity in shade

Uses

  • shade garden ground cover
  • woodland gardens
  • rock gardens
  • naturalizing under trees