hortguide
Guides
Library
PlantsDiseasesPestsSoils
Weather Field Brief About Subscribe

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

Guides Library PlantsDiseasesPestsSoils Weather Field Brief About Subscribe to Field Brief

← Plants

Lilac Daphne

Daphne genkwa

Thymelaeaceae · broadleaf · introduced

Quick Facts

Height
3–4 ft
Spread
5 ft
Light
Sun to Part Shade
Soil
Moist
Water
Moderate
Hardiness
Zone Zones 4–5
Origin
China, Taiwan and Korea

Diseases (12)

Pseudomonas syringae pv. syringae Bacterial Blight
Botrytis cinerea Gray Mold
abiotic (drought, heat stress) or bacterial (Xylella fast... Leaf Scorch
Various fungi (Phyllosticta spp., Septoria spp., Cercospo... Leaf Spot
Lilac ring Lilac Ring Mottle
Phytophthora spp. (P Phytophthora Canker and Shoot Blight
Podosphaera aphanis var. aphanis Powdery Mildew
Phytophthora rubi Root Rot
Black Root Rot
Rhododendron and Cutting Rots
Diaporthe vaccinii Twig Blight
Various plant viruses (Raspberry bushy dwarf virus, Straw... Virus

Pests (7)

Ash borer
Podosesia syringae Lilac borer
Lilac leafminer
Lepidosaphes ulmi Oystershell scale
Cylindrocopturus furnissi Root weevil
Cinara occidentalis, Cinara abietis Aphid
Nuculaspis californica Lecanium scale

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 an ISA Certified Arborist.

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.