Pacific Northwest Plant Disease Management Handbook
Printed page URL:
https://pnwhandbooks.org/node/415
Plant Disease
Host and Disease Descriptions
Host and Disease Descriptions
Reviewed: March 2023
Juniper (
Juniperus
spp.)-Seiridium Canker
Juniper (
Juniperus
spp.)-Twig Blight
Juniper (
Juniperus
spp.)-Witches' Broom
Impatiens-Botrytis Blight
Impatiens-Crown Rot (Damping-off)
Impatiens (
Impatiens walleriana
)-Downy Mildew
Impatiens-Impatiens Necrotic Spot
Indian Hawthorn (
Rhaphiolepis indica
)-Leaf Spot
Incense Cedar
Iris, Bulbous (
Iris
spp.)-Blue Mold
Iris, Bulbous and Rhizomatous (
Iris
spp.)-Crown Rot
Iris, Bulbous (
Iris
spp.)-Fusarium Basal Rot
Iris, Bulbous (
Iris
spp.)-Gray Bulb Rot
Iris, Bulbous (
Iris
spp.)-Ink Spot
Iris, Bulbous and Rhizomatous (
Iris
spp.)-Leaf Spot
Iris, Bulbous (
Iris
spp.)-Nematode, Potato Rot
Iris, Rhizomatous (
Iris
spp.)-Bacterial Soft Rot
Iris, Rhizomatous (
Iris
spp.)-Rhizome Rot
Iris, Bulbous and Rhizomatous (
Iris
spp.)-Viruses
Ivy (
Hedera helix
)-Bacterial Leaf Spot and Stem Canker
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