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Pest management schedule

In order to be successful, an IPM program should follow a schedule of monitoring and cultural controls that begin before the plants are put into the ground and are repeated each year. Read about the specific pest to determine how to monitor for the pest, and to decide what level of pest infestation can be tolerated.

Table 1: Pest management schedule when establishing a patch

Time Action
Summer or fall before planting Locate site where the raspberries will be planted.
Kill old raspberries or wild raspberries near the proposed site.
Take soil for pH and nutrient testing.
Kill all perennial weeds, especially quack grass and thistle.
Winter Order or buy plants from an established nursery that sells plants that have been certified virus-free.
Spring Plant raspberries.
Summer Control annual weeds with hoeing or mulching.
Choose row width and plant grass between rows.

Table 2: Pest management schedule in established raspberry patches

Time Action
Early spring Mow canes for fall bearing raspberries. Mow summer-bearing raspberries producing in alternate years. Do not mow summer-bearing canes if a crop is desired that summer.
If spur blight, cane blight, or anthracnose have been a serious problem in the previous year, apply copper to dormant canes.
May Scout dormant or recently sprouted canes for cane borers. Prune and remove any infested canes.
Prune dead canes on summer-bearing plants after leaves have sprouted. Cut the tops of canes that died from either winter injury or cane borer. Cut below the gall on canes with cane borer.
Mid May to early June If spur blight, cane blight or anthracnose have been a serious problem in the previous year and weather conditions are consistently wet, apply fungicides to protect young primocanes.
Place traps for spotted wing Drosophila and check the traps regularly throughout the growing season.
Mid June to August Check leaves regularly for Japanese beetle. Remove Japanese beetles as they land on raspberry leaves when it is practical.
Check leaves for raspberry sawfly. Remove green larvae when they appear.
Late June through September If spotted wing Drosophila is present, harvest ripe berries, properly dispose of infested fruit and apply insecticides.
Late July Remove dying floricanes to improve air movement through the bed and reduce spread of fungal cane blights.
If gray mold has been a problem in past years, and weather is favorable for disease development, spray fungicides on fall-bearing raspberries during bloom. Remove berries with gray mold to prevent the disease from spreading to ripening berries.
August Monitor for fruit-eating beetles in fall-bearing raspberries by walking rows. Properly dispose of any overripe or rotting berries.
September Scout for spur blight on mature primocanes. Remove any canes showing symptoms of disease.

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