Slender Rosinweed

Slender Rosinweed

© Jed Aplaca

Silphium gracile
Family: Asteraceae (Aster Family)

Slender Rosinweed (Silphium gracile) is a tall, native perennial wildflower found in prairies and open woodlands of Texas, especially in Southeast Texas. Known for its striking yellow flowers and slender, upright form, this species plays a valuable role in supporting pollinators and restoring native grasslands.

• Scientific Name: Silphium gracile
• Common Names: Slender Rosinweed
• Family: Asteraceae (Aster Family)
• Growth Habit: Tall, upright perennial wildflower
• Height: 3-6 feet
• Leaves: Narrow, lance-shaped, rough-textured
• Flowers: Bright yellow, daisy-like blooms held on tall stems
• Bloom Time: Summer to early fall
• Wildlife Benefits: Attracts native bees, butterflies, and other pollinators

Habitat & Range in Southeast Texas

Slender Rosinweed thrives in:

• Tallgrass Prairies: Grows in well-drained soils with full sun
• Open Woodlands: Tolerates light shade but prefers sunny areas
• Roadsides & Fields: Establishes in disturbed soils and open spaces

It is well-adapted to the hot, dry conditions typical of the Gulf Coast Prairie region.

Ecological Importance

© Jed Aplaca

• Pollinator Magnet: Provides nectar and pollen for a range of beneficial insects
• Soil Health: Deep taproots help aerate soil and enhance drought resilience
• Biodiversity Support: Adds vertical structure and floral diversity to prairie ecosystems

Landscaping & Gardening Uses

Slender Rosinweed is a standout choice for naturalistic landscapes:

• Wildflower Meadows & Prairies: Adds height and seasonal color
• Pollinator Gardens: Supports bees, butterflies, and other beneficial insects
• Restoration Projects: Ideal for native prairie restoration and habitat enhancement

Planting & Care

• Sunlight: Full sun
• Soil: Well-drained, sandy to loamy soils
• Water Needs: Low to moderate; drought-tolerant once established
• Maintenance: Low; may need staking if grown in rich soils
• Companion Plants: Pairs well with Little Bluestem (Schizachyrium scoparium), Indian Blanket (Gaillardia pulchella), and Maximilian Sunflower (Helianthus maximiliani)

Fun Facts

• The "rosin" in its name refers to the sticky sap found in many Silphium species.
• Its tall stems make it an excellent background plant in wildflower gardens.
• Native American tribes traditionally used related Silphium species for medicinal purposes.

Conservation & Native Plant Advocacy

Incorporating Slender Rosinweed into native landscapes helps restore prairie ecosystems, supports pollinators, and adds beauty and biodiversity to Southeast Texas gardens.

Where to Find It