Tree Pests & Diseases

Cherry Tree Maintenance

Cherry trees are loved for their spring flowers and ornamental value, but they can be sensitive in Colorado. Common issues include canker, borers, aphids, leaf spot, and environmental stress from drought and heat.

Species
Cherry Tree
Botanical Name
Prunus spp. — ornamental and fruiting cherries
Group
Ornamental Trees
Tracked Problems
7

Seasonal Calendar

ProblemTypeActive Season
Cytospora cankerFungusSpring–Fall
Shot hole diseaseFungus/BacteriaSpring–Summer
Peach twig borer / borersInsectSpring–Summer
AphidsInsectSpring–Fall
Spider mitesMiteSummer
Brown rotFungusSpring–Summer
Environmental stressAbioticSummer–Fall

Pest & Disease Guide

  • Cytospora Canker

    Common symptoms

    • Amber gum oozing
    • Sunken bark
    • Dieback

    Treatment & management

    • Prune infected limbs
    • Reduce drought stress
  • Shot Hole Disease

    Common symptoms

    • Small holes in leaves
    • Brown spotting

    Treatment & management

    • Clean up leaves
    • Avoid overhead irrigation
  • Borers

    Common symptoms

    • Flagging tips
    • Branch dieback

    Treatment & management

    • Prune affected shoots
    • Reduce stress
  • Aphids

    Common symptoms

    • Leaf curling
    • Honeydew

    Treatment & management

    • Rinse foliage
    • Encourage predators
  • Spider Mites

    Common symptoms

    • Bronzed leaves
    • Fine webbing

    Treatment & management

    • Increase irrigation
    • Rinse canopy
  • Brown Rot

    Common symptoms

    • Blossom blight
    • Rotting fruit or twigs

    Treatment & management

    • Remove infected tissue
    • Improve airflow
  • Environmental Stress

    Common symptoms

    • Scorch
    • Premature leaf drop

    Treatment & management

    • Deep watering
    • Mulch base

When to Worry

  • Spreading cankers
  • Heavy dieback
  • Repeated borer damage
  • Severe blossom or fruit loss

Mostly Cosmetic

  • Minor aphids
  • Light spotting
  • Occasional mite damage

Notes

These can shorten tree life and reduce ornamental value.

These usually improve with good pruning and irrigation.

Great Western Tree Care

When you want a professional opinion

The Root exists to help you understand your landscape. When a tree needs hands-on evaluation, a Great Western arborist can look at it in person.