Insects, Diseases and Disorders on Raspberry in Ontario

Table of contents

Part One: Diseases on canes and leaves

Spur blight

Imge of an overwintering cane with spur blight.

Overwintering canes

Spur blight symptoms on raspberry primocanes:

Image of primocane with spur blight.

Image of cane with spur blight.

Spur blight symptoms on raspberry primocane

Cane botrytis

Cane botrytis symptoms on raspberry primocanes:
Image of two canes inplanting with cane botrytis.

Image of cane with cane botrytis.

Cane botrytis symptoms on raspberry primocanes

Cane blight

Image of canes in planting with cane blight symptoms.

Cane blight symptoms

Image of cane with lesion when bark is scraped away.

Cane blight lesion when bark is scraped away

Image of cane with cane blight lesion.

Cane blight: lesion

Anthracnose

Image of cane with anthracnose lesions.

Anthracnose on stem

Image of leaf petiole with anthracnose lesions.

Anthracnose lesions on petiole

Anthracnose disease on raspbery primocane

Anthracnose disease on raspberry primocane

Anthracnose infection on leaves

Anthracnose infection on leaves
Anthracnose on overwintering fruiting cane

Anthracnose on overwintering fruiting cane

Cane gall and crown gall

Early symptoms of crown gall on raspberry canes

Early symptoms of crown gall on raspberry canes

Crown gall on roots of raspberry

Crown gall on roots of raspberry

Image of raspberry canes in the winer with cane gall.

Raspberry canes in the winter with cane gall

Powdery mildew

Growing terminal with powdery mildew.

Growing terminal with powdery mildew

Leaf spot

Image of leaves with leafspot.

Raspberry leaves with leaf spot

Late leaf rust

Image of underside of leaf with late leaf rust.

Underside of leaf with late leaf rust

Late leaf rust symptoms on raspberry

Late leaf rust symptoms on raspberry

Orange rust (blackberry only)

Orange rust on blackberry leaf

Orange rust on blackberry leaf

Image of black berry leaf with orange rust.

Blackberry leaf with orange rust

Image with leaf with orange rust.

Leaf with orange rust

Part two: Insect and disease damage on canes and fruit

Fire blight

Image of leaf blacken by Fire Blight inspection.

Leaves blacken

Image of shoot tips wilted.

Shoot tips wilt

Image of fruit on cane that are dry and hard.

Fruit may become dry and hard

  • Learn more:

Red-necked cane borer

Red-necked cane borer larvae

Red-necked cane borer larvae

Image of cane with swelling due to Red-necked Cane Borer.

Larvae tunnel in primocanes, causing swelling and stretch marks

Image of cane with scraped bark showing spiral tunnel tracks from larvae.

Scraped bark to see spiral tunnel tracks from larvae

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Snowy tree cricket

Image of cane with zipper like egg laying scar.

Zipper like egg laying scar

Image of leaf with Nymph of snowy tree cricket.

Snowy tree cricket nymph

Two-spotted spider mite

Image of leaves with 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 showing webbing and leaf stippling

Two-spotted spider mite damage and defoliation

Two-spotted spider mite damage and defoliation

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Raspberry cane borer

Image of raspberry shoot with egg laying scar.

Note characteristic double cut around egg laying scar, resulting in wilted shoots

Image of wilted cane due to raspberry cane borer.

Wilted shoots resulting from egg laying scar

Symptoms of raspberry cane borer

Symptoms of raspberry cane borer

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White druplet disorder

Image of raspberry druplet with white druplet disorder.

Solar injury

Rust

Image of raspberry fruit with rust.

Raspberry fruit with rust

Anthracnose

Image of fruit with Anthracnose.

Anthracnose damage on fruit

  • Learn more:

Botrytis

Image of fruit with Botrytis.

Botrytis gray mould on raspberry fruit

Geometrid

Image of fruit with larva.

Geometrid looper

Image of picked fruit with larva.

Geometrid looper

Tarnished plant bug

Image of dried up druplets.

Dried up druplets as a result of the tarnished plant bug

Image of dried up druplets.

Dried up druplets as a result of the tarnished plant bug

Image of fruit with tarnished plant bug.

Tarnished plant bug on raspberry fruit

Raspberry fruitworm

Raspberry fruitworm

Raspberry fruitworm

Image of raspberry fruit worm beetle.

Raspberry fruitworm adult

Image of fruit with larva.

Raspberry fruitworm larvae feeding on fruit

Image of raspberry fruitlets.

Adult laying eggs in fruit

Image of raspberry leaves.

Prebloom shredding of leaves from adults

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Part three: What causes dead or dying canes

| Winter injury | Verticillium wilt | Crown gall | Phytophthora root rot | Crown borer |

Winter injury

Image of raspberry planting with 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

Image of black raspberry canes with Verticillum Wilt.

Black raspberries are very susceptible. Causes canes to wilt. “Bluestem” appearance to infested canes

Image of canes with Verticillium Wilt.

Canes with verticillium wilt

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Crown gall

Image of raspberry roots with galls.

Large tumours or galls on roots. Plant vigour reduced but crown gall is rarely fatal

Phytophthora root rot

Image of raspbery primocanes with wilt.

Initially, primocanes may wilt

Image of raspberry planting with Phytophthora Root Rot.

In following season, primocane emergence is poor

Image of raspberry crown scraped back to show characteristic rust red colour.

Characteristic rust red colour evident in crown tissue

Image of raspberry planting with Phytophthora Root Rot.

Raspberry planting with Phytophthora root rot

Phytophthora symptoms in the field

Phytophthora symptoms in the field

Distinct reddish brown discolouration beneath bark

Distinct reddish brown discolouration beneath bark

Crown borer

Image or raspberry crown with frass and tunnelling.

Evidence of frass and tunnelling in crown tissue

Image of stem split open to show crown borer larvae and tunnel.

Dirty white larvae (caterpillar) present

Raspberry crown borer larvae close-up

Raspberry crown borer larvae close-up

Raspberry crown borer larvae

Raspberry crown borer larvae

 

Related links:

 


For more information:
Toll Free: 1-877-424-1300
E-mail: ag.info.omafra@ontario.ca


Author: Pam Fisher - Berry Crops Specialist/OMAFRA
Creation Date: June 2001
Last Reviewed: 01 October 2012