Decline

  • Symptoms

    • Stunted growth and dieback occur. Young foliage turns grayish green or bronze and finally straw colored. Old leaves fall prematurely. Middle or top branches die. Sunken cankers form at the soil line or on branches in the crotches where dead leaves accumulate. Wood under the sunken canker is blackened.
  • Management

    • Protect plants from winter injury and other stresses. Prune dead branches well below cankered areas. Remove dead leaves accumulated among the branches.

Boxwood Decline


 

Leaf Burn

  • Symptoms

    • Leaf tips and margins yellow and redden as leaves fall prematurely.
  • Management

    • Protect shrubs from drought and drying winds in Autumn and Winter.

Leaf Burn on Boxwood

 


Leaf Spot

  • Symptoms

    • Straw-yellow leaves are dotted with small, black fungal fruiting structures.
  • Management

    • Only leaves weakened by winter injury are infected. Protect plants from wind, salt spray, and salt runoff.

Boxwood Leaf Spot


Nematodes

  • Symptoms

    • Growth is stunted, leaves have a bronzed appearance, and the shrub is in decline. Small roots have small brown dead areas which enlarge to engulf the entire root system.
  • Management

    • There are no adequate controls once the plant is infected. If a plant is removed, do not replace it with a nematode-susceptible plant unless the site is thoroughly fumigated and aerated first.

Nematode Damage