Check the label for mixing instructions. Pickleworms feed on the fruit of cucumbers and squash and can be detected by finding holes bored into the fruit. Much damage by Pickleworms can be avoided by planting as early as the weather permits. Squash and cucumbers bearing after August 15 will need protecting by using weekly sprays of Sevin or Thiodan. Cucumbers, melons, squash and pumpkins are collectively called cucurbits.
Cucurbits differ from most garden vegetables in their requirements for pollination.
Pollen transfer from male to female flowers is essential for fruit set. Therefore, insecticides must be applied in a judicious manner on cucurbits to avoid bee kill and subsequent yield loss. Regardless of the insecticide used on cucurbits, applications should be made late in the day when bee activity is reduced. Sprays are usually less damaging to bees than dusts. Watch leaf for pests Remember to watch for leaf feeding pests of cucurbits such as cucumber beetles.