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
Piggyback Plant (
Tolmiea menziesii
)-Powdery Mildew
Potato (
Solanum tuberosum
)-Brown Spot and Black Pit
Potato (
Solanum tuberosum
)-Gray Mold (Botrytis Blight)
Prune and Plum (
Prunus
spp.)-Black Knot
Quinoa (
Chenopodium quinoa
)-Downy Mildew
Quinoa (
Chenopodium quinoa
)-Passalora Leaf Spot
Radish (
Raphanus sativus
)-Alternaria Diseases (Black Spot, Gray Leaf Spot, Pod Spot)
Sedum-Powdery Mildew
Shallot (
Allium cepa
)
Spinach (
Spinacia oleracea
)-Bacterial Soft Rot
Turnip and Rutabaga (
Brassica
spp.)-Alternaria Diseases (Black Spot, Gray Leaf Spot, Pod Spot)
Veronica-Downy Mildew
Veronica-Powdery Mildew
Viburnum-Root Rots
Viburnum-Stem Canker
Broccoli (
Brassica oleracea
)-Black Rot
Brussels sprouts (
Brassica oleracea
)-Black Rot
Carrot (
Daucus carota
)-Brown Rot
Carrot (
Daucus carota
)-Carrot Purple Leaf
Collards (
Brassica oleracea
var.
viridis
)
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