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Back to trial Heuchera

Trial Garden

Heuchera longiflora

5 Photos


This species is very similar in size and color to the more well-known Heuchera americana. The main difference is the individual flowers of H. longiflora are larger and held on stems that are shorter than H. americana. Even with larger flowers, the floral display was still considered insignificant due to the subdued color and floppy inflorescences. The foliage is medium green with dark green veining. A silvery overlay on the foliage was observed on some individuals, but this characteristic was variable, as was red venation during cool weather. The habit of H. longiflora was more flat than mounding and not very uniform among the five plants. Powdery mildew was observed once, but was not considered a concern. In 2013 we experienced the wettest June on record which led to the eventual death of all five plants from root/stem rot that year. Sun tolerance for H. longiflora was better than many of the selections we trialed.  It barely missed the cutoff for the highest category of sun tolerance, less than six hours of direct sunlight.  The sun-grown plants did experience minor bleaching and burning during the hottest part of the summer; however, H. longiflora would likely do well in a sunny location if given adequate moisture and some midday shade.


  • Rating
    Did not complete trial 
  • Common Name
    Long-flowered alumroot  
  • Bloom Period
    late May – early July 
  • Size
    10” x 20” x 32” (h x w x flower hgt.) 
  • Flower Color
    greenish white 
  • Floral Display
  • Sun Tolerance
    4 hours or less