Part one: Diseases on canes and leaves
Spur blight

Overwintering canes.Spur blight symptoms on raspberry primocanes

Primocane with spur blight.
Cane with spur blight.
Spur blight symptoms on raspberry primocane.Learn more: Ontario Crop Protection Hub
Cane botrytis
Cane botrytis symptoms on raspberry primocanes

Two canes inplanting with cane botrytis.
Cane with cane botrytis.
Cane botrytis symptoms on raspberry primocanes.Learn more: Ontario Crop Protection Hub
Cane blight

Cane blight symptoms.
Cane blight lesion when bark is scraped away.
Cane blight: lesion.Learn more: Ontario Crop Protection Hub
Anthracnose

Anthracnose on stem.
Anthracnose lesions on petiole.
Anthracnose disease on raspberry primocane.
Anthracnose infection on leaves.
Anthracnose on overwintering fruiting cane.Learn more: Ontario Crop Protection Hub
Cane gall and crown gall

Early symptoms of crown gall on raspberry canes.
Crown gall on roots of raspberry.
Raspberry canes in the winter with cane gall.Learn more: Ontario Crop Protection Hub
Powdery mildew

Growing terminal with powdery mildew.Leaf spot

Raspberry leaves with leaf spot.Learn more: Ontario Crop Protection Hub
Late leaf rust

Underside of leaf with late leaf rust.
Late leaf rust symptoms on raspberry.Learn more: Ontario Crop Protection Hub
Orange rust (blackberry only)

Orange rust on blackberry leaf.
Blackberry leaf with orange rust.
Leaf with orange rust.Learn more: Ontario Crop Protection Hub
Part two: Insect and disease damage on canes and fruit
Fire blight

Leaves blacken.
Shoot tips wilt.
Fruit may become dry and hard.Learn more: Ontario Crop Protection Hub
Red-necked cane borer

Red-necked cane borer larvae.
Larvae tunnel in primocanes, causing swelling and stretch marks.
Scraped bark to see spiral tunnel tracks from larvae.Learn more: Ontario Crop Protection Hub
Snowy tree cricket

Zipper like egg laying scar.
Snowy tree cricket nymph.Two-spotted spider mite

Stippling on leaves from mite feeding.
Two-spotted spider mite damage showing webbing and leaf stippling.
Two-spotted spider mite damage and defoliation.Learn more: Ontario Crop Protection Hub
Raspberry cane borer

Note characteristic double cut around egg laying scar, resulting in wilted shoots.
Wilted shoots resulting from egg laying scar.
Symptoms of raspberry cane borer.Learn more: Ontario Crop Protection Hub
White druplet disorder

Solar injury.Rust

Raspberry fruit with rust.Anthracnose

Anthracnose damage on fruit.Learn more: Ontario Crop Protection Hub
Botrytis

Botrytis gray mould on raspberry fruit.Geometrid

Geometrid looper.
Geometrid looper.Tarnished plant bug

Dried up druplets as a result of the tarnished plant bug.
Dried up druplets as a result of the tarnished plant bug.
Tarnished plant bug on raspberry fruit.Raspberry fruitworm

Raspberry fruitworm.
Raspberry fruitworm adult.
Raspberry fruitworm larvae feeding on fruit.
Adult laying eggs in fruit.
Prebloom shredding of leaves from adults.Learn more: Ontario Crop Protection Hub
Part three: What causes dead or dying canes
Winter injury

Canes die back from tips down. Pattern of injury depends on variety and cold exposure. Injury shows up in early spring.Verticillium wilt

Black raspberries are very susceptible. Causes canes to wilt. "Bluestem" appearance to infested canes.
Canes with verticillium wilt.Learn more: Ontario Crop Protection Hub
Crown gall

Large tumours or galls on roots. Plant vigour reduced but crown gall is rarely fatal.Learn more: Ontario Crop Protection Hub
Phytophthora root rot

Initially, primocanes may wilt.
In following season, primocane emergence is poor.
Characteristic rust red colour evident in crown tissue.
Raspberry planting with Phytophthora root rot.
Phytophthora symptoms in the field
Distinct reddish brown discolouration beneath barkLearn more: Ontario Crop Protection Hub
Crown borer

Evidence of frass and tunnelling in crown tissue
Dirty white larvae (caterpillar) present
Raspberry crown borer larvae close-up
Raspberry crown borer larvaeLearn more: Ontario Crop Protection Hub