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!

Wide shot of flowering Amsonia.
Latest Trial: Amsonia for the Mid-Atlantic Region Amsonia for the Mid-Atlantic Region Amsonia for the Mid-Atlantic Region
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 trial Monarda

Trial Garden

Monarda ‘AChall’ (Grand Marshall)

7 Photos


Monarda ‘AChall’, sold under the trade name Grand Marshall™, has gorgeous, deep-reddish purple flowers, a compact habit (28” tall), and excellent resistance to powdery mildew. What really sets Grand Marshall™ apart from other compact cultivars is that its growth habit is still Monarda-like, growing in a uniform mass that spreads slowly outward. Many of the newest compact selections are dwarfed to the point of looking artificial and out of place in the landscape. The habit of Grand Marshall™ habit better lends itself to blending with its neighbors in an attractive and natural way.


  • Rating
  • Common Name
    Grand Marshall™ bee balm  
  • Peak Bloom
    Early July 
  • Flower Size
  • Peak flower coverage
  • Weeks in full bloom
  • Height
  • Width after three years
  • Powdery mildew resistance