Natural Resources Canada
Symbol of the Government of Canada

Western Redcedar (Thuja plicata)

Botrytis cinerea
( Gray mould )

Bradysia spp.
( Fungus gnats )

Cinara spp.
( Giant conifer aphids )

Didymascella thujina
( Cedar Leaf Blight )

Fusarium spp.
( Post-emergence damping-off )

Fusarium spp.
( Fusarium root rot )

Lygus lineolaris
( Lygus bug )

Oligonychus ununguis
( Spruce spider mite )

Orgyia antiqua
( Rusty tussock moth )

Otiorhynchus ovatus
( Strawberry root weevil )

Otiorhynchus spp.
( - Adults Root weevil )

Otiorhynchus sulcatus
( Black vine weevils )

Peridroma saucia
( Variegated cutworms )

Phoma spp.
( Phoma blight )

Phomopsis spp.
( Phomopsis canker and foliage blight )

Polyphylla decemlineata
( June beetles (white grubs) )

Pythium spp.
( Post-emergence damping-off )

Pythium spp.
( Pythium root rot )

Thelephora terrestris
( Smothering fungus )

Tipula paludosa
( European marsh crane fly (leatherjackets)