Leaf Blight

• Leaf blight is a fungus that will infect most honeysuckle species. Leaf blight will live over winter on leaves that have fallen to the ground. Wind and rain will spread the spores around to the new leaves, causing an infection on new leaf growth in spring. Before you see the leaves turning a brownish color with a yellowish halo color, the leaves will roll up and appear crinkled.
  
  

Water

• Although most honeysuckle species are tolerant of drought conditions, during dry spells, the plant leaves will start to turn yellow and drop to the ground. Honeysuckle plants grown in containers or a home garden must have at least 1 inch of water per week to keep the plant healthy and leaves green. Placing a layer of mulch around the base of the plant will help keep the moisture in the soil and keep the roots cool in hot temperatures.
  
  

Leaf Scorch

• Leaf scorch will cause yellowing leaves on the honeysuckle plant. Generally, plants affected by leaf scorch are those that have prolonged periods of dry soil and bright sunshine along with extreme heat. Plant leaves will turn yellow, brown or bronze and drop from the plant if the leaf scorch is severe. Moderate cases of leaf scorch do not cause the leaves to drop.
  
  

Winter

• Although many honeysuckle varieties will keep their leaves in winter when grown in southern climates, severe cold temperatures will cause the leaves to turn yellow and drop from the plant. Some leaves may not turn yellow, but if the cold temperatures arrive gradually, the leaves can change to yellow before dropping.