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

Hypericum densiflorum

Native Plants

Bushy St. John’s Wort

3 Photos


Hypericum densiflorum is a great summer blooming shrub with beautiful finely-textured foliage during the growing season. A profusion of bright yellow flowers appear in summer and are effective for a couple of weeks. In autumn the delicate foliage of bushy St. John’s wort becomes a golden yellow. Additionally, smooth, bronze bark becomes visible as the shrub grows to its mature height of 6’. Bushy St. John’s wort performs well in the mixed perennial border or rock garden. It tolerates sun to filtered shade and is adaptable to a range of soil moisture conditions. This species works well with Liatris spp., Silphium terebinthinaceum, Callicarpa americana, Opuntia humifusa, and Rhododendron spp.

More Details

  • Plant Type
  • Sun/Shade Conditions
    filtered-shade, full-sun 
  • Foliage Character
  • Soil Moisture
    average, dry 
  • Flowering Period
    late-summer, mid-summer
  • Soil PH
  • Flower Color
  • Summer Foliage Color
  • Fall Foliage Color
    green, orange, yellow 
  • Fruit/Seed Color
    brown, tan