Overview

Stylophorum diphyllum is a plant with a herbaceous perennial habit in the genus Stylophorum, part of the Papaveraceae family, with deeply divided leaves foliage. Stylophorum diphyllum grows best in partial shade and full shade, and tolerates loam soils and any pH. Its UK hardiness is rated H5. Suggested uses include woodland garden, shady border and groundcover. It is native to Ontario.

About

Stylophorum diphyllum, commonly known as wood poppy or celandine poppy, is a herbaceous perennial belonging to the genus Stylophorum. This genus includes three species of woodland perennials native to North America and China, characterised by green, lobed leaves with undulating margins and yellow, poppy-like flowers on elongated, bristly stems. Stylophorum diphyllum thrives in partial to full shade, favouring moist but well-drained loam soils with a range of pH levels. It is hardy in the UK (H5) and is suitable for woodland gardens, shady borders, and as groundcover, flowering in spring and summer.

About the genus

Stylophorum (celandine-poppy) is a genus of three species of herbaceous perennial plants native to woodland in eastern North America and China.

Growing conditions

Best soil and position for Stylophorum

Sunlight

Partial shade, Full shade

Soil type

Loam

Soil pH

Acid, Alkaline, Neutral

Soil moisture

Moist but well-drained

Aspect

North-facing, East-facing, West-facing

Exposure

Sheltered

UK hardiness

H5

Plant details

Stylophorum diphyllum size, habit and characteristics

Habit

Herbaceous perennial

Foliage

Deeply divided leaves

Suggested uses

Woodland garden, Shady border, Groundcover

Native to

Ontario

Care notes

Pruning and caring for Stylophorum diphyllum

Propagation

Divide in spring, Sow seed in containers in fall

Pest resistance

Slugs, Snails

Disease resistance

Generally disease-free

Frequently asked questions