Stylophorum diphyllum
Common Name(s):
- Phonetic Spelling
- sty-loh-FOR-um dy-FIL-um
- Description
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Yellow Wood Poppy is a rhizomatous herbaceous perennial wildflower in the poppy family that is native to Eastern USA in moist open forests, along streams and ravines. It is not native to NC but should be able to be grown in the mountains and Piedmont areas.
In spring to early summer they produce bright yellow 4-petal flowers that are followed by a bristly blue-green pod that hangs below the leaves.
The plants need moist humus-rich soils in partial to full shade. They will go dormant in summer if allowed to dry out. Use this plant in woodland settings, shady native plant or naturalized areas or along streams and ponds.
- See this plant in the following landscapes:
- Shaded Slope Woodland Walk
- Cultivars / Varieties:
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- Tags:
- Cultivars / Varieties:
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- Tags:
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Attributes:
- Genus:
- Stylophorum
- Species:
- diphyllum
- Family:
- Papaveraceae
- Uses (Ethnobotany):
- Native Americans used the sap for yellow dye
- Life Cycle:
- Perennial
- Recommended Propagation Strategy:
- Division
- Seed
- Country Or Region Of Origin:
- South Ontario to North Central & Eastern Central U.S.A
- Distribution:
- AL , AR , DC , DE , GA , IL , IN , KY , MD , MI , MO , OH , PA , TN , VA , WV
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Whole Plant Traits:
- Plant Type:
- Native Plant
- Wildflower
- Habit/Form:
- Spreading
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Cultural Conditions:
- Light:
- Dappled Sunlight (Shade through upper canopy all day)
- Deep shade (Less than 2 hours to no direct sunlight)
- Partial Shade (Direct sunlight only part of the day, 2-6 hours)
- Soil Texture:
- Clay
- High Organic Matter
- Loam (Silt)
- Sand
- Soil pH:
- Acid (<6.0)
- Alkaline (>8.0)
- Neutral (6.0-8.0)
- Soil Drainage:
- Good Drainage
- Moist
- Occasionally Wet
- NC Region:
- Mountains
- Piedmont
- USDA Plant Hardiness Zone:
- 4b, 4a, 5b, 5a, 6a, 7a, 7b, 8a, 8b, 9b, 9a
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Fruit:
- Fruit Color:
- Blue
- Green
- Fruit Type:
- Capsule
- Fruit Length:
- < 1 inch
- Fruit Description:
- 1-inch fruits are bristly blue-green pods
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Flowers:
- Flower Color:
- Gold/Yellow
- Flower Inflorescence:
- Head
- Umbel
- Flower Bloom Time:
- Spring
- Summer
- Flower Petals:
- 4-5 petals/rays
- Flower Size:
- 1-3 inches
- Flower Description:
- Solitary or a small cluster of 1.5-2" deep yellow flowers at the top of the stem. Has 4 petals, two hairy sepals, many stamens and a single knobby stigma. Blooms April to June.
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Leaves:
- Leaf Color:
- Blue
- Green
- Leaf Arrangement:
- Opposite
- Leaf Shape:
- Palmasect
- Pinnatifid
- Leaf Margin:
- Lobed
- Hairs Present:
- No
- Leaf Description:
- Usually has a pair of stem leaves and one or more basal blue-green leaves with silvery undersides.
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Stem:
- Stem Is Aromatic:
- No
- Stem Description:
- Stems have yellow sap
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Landscape:
- Landscape Location:
- Naturalized Area
- Pond
- Woodland
- Landscape Theme:
- Rain Garden
