Mt Cuba Center
Explore the Gardens Virtual Tour Virtual Tour
HOURS

Mt. Cuba is open Wednesday through Sunday, 10 am to 6 pm.

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
MEMBERSHIP

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

close
Mt Cuba Center
Back to trial Heuchera

Trial Garden

Heuchera americana

8 Photos


Summary

H. americana has medium green foliage with varying degrees of silver markings. Red venation was also variable among individuals during cool weather. Such variability is common in plants grown from seed. Cultivars like H. americana ‘Dale’s Strain’ and H. ‘Green Spice’ have a similar aesthetic but the silver veil is much more uniform. During its first two growing seasons, H. americana was very slow to create full and dense mounds of foliage. In 2014 however, full mounds were produced early in the season. Floral performance was consistently poor; inflorescences were very tall, floppy, and pulled the plants open as they fell. However, once H. americana finished flowering, the plants quickly filled in with a new flush of growth. Powdery mildew was a problem in both 2012 and 2013, but no foliar disease was observed in 2014. One plant did die from root rot in summer of 2014, but this did not affect its final rating. During our sun trial, H. americana did experience some leaf scorch, and thus is only recommended for part shade – full shade conditions.


Details

  • Rating
    3.1 
  • Common Name
    American alumroot  
  • Bloom Period
    late May – late June 
  • Size
    10” x 30” x 48” (h x w x flower hgt.) 
  • Flower Color
    none 
  • Floral Display
    insignificant 
  • Sun Tolerance
    4 hours or less