hortguide
Guides
Plant SelectionPest & DiseaseSite AssessmentCultural PracticesAll Guides
Library
PlantsDiseasesPestsBeneficialsSoils
Weather Observations Field Brief
About
About HortGuideData & Methodology
Subscribe

⌘K to open  ·  ↑↓ to navigate  ·  Esc to close

Guides Plant SelectionPest & DiseaseSite AssessmentCultural Practices Library PlantsDiseasesPestsBeneficialsSoils Weather Observations Field Brief About Data & Methodology Subscribe to Field Brief

← Plants

American Cranberrybush Viburnum

Viburnum trilobum

Adoxaceae, Caprifoliaceae · broadleaf deciduous shrub · introduced

Last updated March 8, 2026

Data Coverage 1 of 6 dimensions
Site Data
Threats
Cultivars
Phenology
GDD Thresholds
Puget Sound

Diseases (10)

Symptom category — not a single disease Leaf Spot Botrytis cinerea Botrytis Shoot Blight Phytophthora ramorum Ramorum leaf and shoot blight (Sudden oak death) Podosphaera aphanis var. aphanis Powdery Mildew Pseudomonas syringae pv. viburni or Xanthomonas spp. Bacterial blight (Leaf spot) Pseudomonas syringae pv. syringae Bacterial Blight Phytophthora ramorum"filthy five\" genera are inc Ramorum Leaf Blight and Shoot Dieback Symptom category — not a single disease Root Rot Phytophthora cactorum"heeled in\" (placed in sawdust pile... Shoot Blight Botryosphaeria corticis Stem Canker

Pests (3)

Pyrrhalta viburni Viburnum leaf beetle Otiorhynchus spp. Root weevil Aphis fabae Bean aphid

Get the Field Brief

Seasonal scouting notes, timing updates, and the regional detail that national guides leave out. Delivered when it matters.

hortguide

Regional plant knowledge for Western Washington. Written by Chris Welch.

Guides

  • All Guides
  • Plant Profiles
  • Disease Guides
  • Pest Guides

Library

  • Plants
  • Diseases
  • Pests
  • Soils

More

  • Field Brief Newsletter
  • About

Pesticide recommendations are for reference only. Always read and follow the label.

© 2026 HortGuide · Chris Welch · All rights reserved.