Mt Cuba Center
Morning sunrise illuminates the round garden at Mt. Cuba Center.
Explore the Gardens Virtual Tour Virtual Tour

Thanks for a great year! Mt. Cuba Center is closed for general admission for the season and will reopen on April 3, 2024.

An ecological gardening certificate student completes a Native Plants of Fall exam in Mt. Cuba Center's naturalistic gardens.
Ecological Gardening Certificate Learn More Learn More
Program Guide

Classes offered year-round. Learn to garden in harmony with nature, take an art or wellness class, and more!

Carex barrattii
Latest Trial: Carex for the Mid-Atlantic Region Learn More Learn More
Trial Garden

Mt. Cuba Center evaluates native plants and related cultivars for horticultural and ecological value.

Mt. Cuba Center's natural lands pictured at sunset.
Protecting Natural Lands Learn More Learn More
Ecological Land Management

Mt. Cuba conserves and stewards more than 1,000 acres including meadows, forests, streams and riparian corridors.

Two guests walk down the West Slope path in spring at Mt. Cuba Center.
Gift a Membership Gift Guide Gift Guide

Enjoy unlimited general admission, member discounts, guest passes, and more!

Mt Cuba Center
Back to list

Silphium mohrii

Native Plants

Mohr’s Rosinweed

3 Photos


With large basal, lance-shaped foliage, a clump-forming habit and numerous pale yellow flowers, Mohr’s rosinweed adds a bold statement to the perennial border or naturalized planting. Basal leaves are 10-15” long, gradually smaller as they ascend the stems; both leaves and stems are covered with dense, fine, bristly hairs. The 2” flowers are slightly fragrant, borne on erect, 2-5’ tall stems that branch near the top. Full sun is best but plants will tolerate light shade. Plants prefer a rocky to gravelly, well-drained soil with low fertility. Combined with Rudbeckia fulgida, Physostegia virginiana ‘Vivid’ and Eurybia hemispherica, it adds an architectural element to a meadow planting.

More Details

  • Plant Type
  • Sun/Shade Conditions
  • Foliage Character
  • Soil Moisture
    average, dry 
  • Flowering Period
    early-fall, late-summer, mid-summer
  • Soil PH
  • Flower Color
  • Summer Foliage Color
  • Fall Foliage Color
  • Fruit/Seed Color