Location

• When selecting a spot for the Heuchera Citronelle, choose one that has fertile, moist soil with good drainage. During the winter months, poor drainage can cause mold and root rot. Place them in locations that have partial shade during the afternoon. They do well in USDA Hardiness Zones 4 through 9, and some cultivars can survive in Zone 3 while others can survive in Zone 11.
  
  

Considerations

• The color of the Heuchera Citronelle leaves affect its tolerance to the sun. While varieties with purple leaves tend to weather the sun more easily, the Heuchera Citronelle has bright yellow leaves, which make it more prone to damage from direct light. While they might survive in full sun conditions, they may be smaller and look less healthy.
  
  

Requirements

• The Heuchera Citronelle is generally considered a simple plant to maintain. It needs about an inch of water every week, and should be mulched in the fall to protect its vulnerable roots from breaking the surface of the soil in winter. When the blossoms have faded, cut them off to promote good blooming in the next season.
  
  

Risks

• The Heuchera Citronelle is a fairly hardy plant, but Japanese beetles and strawberry root weevils are occasionally a problem. Similarly, bacterial and fungal leaf spots as well as powdery mildew and the Botrytis fungs can affect these plants.
  
  

Division

• Over time, a Heuchera Citronelle may grow too large and require division. To divide a plant that is growing too big and is unable to get all the resources it needs for its many shoots, divide the cluster up into groups, pull them up gently and then replant them apart from each other. This can be done every three to four years.