Japanese Poppy

Hylomeconjaponica

Family
Papaveraceae (pa-pav-er-AY-see-ee)
Genus
Hylomecon (hy-LOH-mee-kon)
Species
japonica (juh-PON-ih-kuh)
Synonym
Sun Exposure
Sun to Partial Shade
Height
6-12 in. (15-30 cm)
Spacing
9-12 in. (22-30 cm)
Hardiness
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
Bloom Color
Bright Yellow
Bloom Time
Late Spring/Early Summer
Other Details
Category
Perennials
Water Requirements
Foliage Color
Where to Grow
Bloom Characteristics
Bloom Size
Other details
Soil pH requirements
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
Patent Information
Propagation Methods
By dividing the rootball
From seed; winter sow in vented containers, coldframe or unheated greenhouse
Seed Collecting
Regional

This plant is said to grow outdoors in the following regions:

East Haddam, Connecticut

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Gardener's Notes:

1
positive
0
neutral
0
negative
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East Haddam, CT | December 2010 | positive

A charming ephemeral, fully hardy to zone 6. Makes attractive divided foliage in April, blooms for 2 weeks in May, then is gone for the ...Read More

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