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Ministry of Agriculture, Food and Rural Affairs

Strawberry Pest Activity in Ontario

The periods of pest activity illustrated below are general guidelines based upon both Ontario field experience and pest biology research. The actual period of activity for any given pest will vary significantly from year to year, depending on over-wintering conditions; seasonal temperature accumulation; relative humidity; rainfall; prevailing wind patterns; and other environmental factors.

Click on pest name for more information.

Strawberry growth stages can vary by 2-3 weeks depending on the year and the region

Fruiting Years

Fruiting Scouting Calendar Bacterial Wilt Damping-Off and Root Rots Bacterial Wilt Downy Mildew Angular Leaf Spot Phytophthora Blight Gummy Stem Blight Anthracnose Viruses Powdery Mildew Fusarium Wilt Rhizoctonia White Mould Two-Spotted Spider Mites AphidsLeaf Hoppers Cucumber Beetles Alternaria Leaf Spot


Non-Fruiting Years

Non Fruiting Scouting Calendar
Red Bar Peak Pest Activity. All IPM strategies (scouting, trapping, preventative measures, etc...) should be implemented well in advance of the expected peak activity period. Scouting activities are often intensified during the expected peak periods.