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Native Plant Society of Texas

Rosinweed Sunflower

Silphium radula var. gracile

Asteraceae (Aster Family)

Slender Rosinweed

Photo Credit: Fannon, Carolyn, https://www.wildflower.org/gallery/result.php?id_image=36955
Photo Credit: Fannon, Carolyn, https://www.wildflower.org/gallery/result.php?id_image=36955
Photo Credit: Wasowski, Sally and Andy, https://www.wildflower.org/gallery/result.php?id_image=24592
Photo Credit: Wasowski, Sally and Andy, https://www.wildflower.org/gallery/result.php?id_image=24592

Plant Ecoregion Distribution Map

Native Habitat: Grassland
East Central Texas Plains, Gulf Coast Prairies and Marshes, Western Gulf Coastal Plain

Maintenance

Use in perennial garden or rocky hillside.

Comments

NA

Growth Form

Herbaceous

Height

2 to
3 ft

Spread

.5 to
1 ft

Soil Type(s)

Sand, Loam, Acid, Moist, Dry

Light Requirement

Sun, Part Shade

Water Requirement

Low

Leaf Retention

Deciduous

Lifespan

Perennial

Bloom Color

Yellow

Bloom Season

Summer

Seasonal Interest

Nectar, Pollen

Wildlife Benefit

Butterflies, Bees

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Previous Scientific Name(s): Synonym/s: Silphium gracile, Silphium simpsonii var. wrightii

References

1) https://www.wildflower.org/plants/result.php?id_plant=SIGR4, 2) https://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=780956#null, 3) http://bonap.net/TDC/Image/Map?taxonType=Species&taxonId=25441&locationType=County&mapType=Normal,

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State Office Phone: 830.997.9272

State Office Address:
Native Plant Society of Texas
PO Box 3017
Fredericksburg, TX 78624

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