Silphium integrifolium (Rosinweed)

• Scientific Name: Silphium integrifolium
  
• Common Name: Rosinweed
  
• Sunlight: Full sun
  
• Water: Low to medium water needs; drought-tolerant once established
  
• Soil: Prefers well-drained loamy or clay soils; tolerates a variety of soil conditions
  
• Height: 3-6 feet
  
• Bloom Time: Summer through early fall, typically July to September
  
• Lifespan: Perennial
  
• Growth Habit: Upright, clump-forming wildflower with sturdy, branching stems

Additional Information: Rosinweed is a hardy Oklahoma native prairie wildflower that produces cheerful, sunflower-like yellow blooms throughout the summer. Its rough, resinous leaves and sturdy stems give it a distinctive texture, while its deep root system provides excellent drought tolerance once established. The flowers attract pollinators, and the seeds provide food for birds, including goldfinches. Rosinweed is a long-lived perennial that may take a few years to reach its full size as it develops an extensive root system. Its impressive height and long-lasting blooms make it an excellent choice for prairie restorations, pollinator gardens, and naturalized landscapes.

Convert to PDF