Successive plantings make it harder to control virus transmission, as the vectors that build in one crop move onto the next. Also, both the green peach and the melon aphid have shown problems with insecticide resistance. Careful follow-up scouting after a spray is important, and be prepared to try other classes of insecticides. There are new materials that are selective against aphids. Squash Vine Borer Squash vine borer has one generation a year.
Problems are typically more severe in squash, pumpkins and gourds than melons or cucumber.
Scouts can look for the brightly colored moths flying during the day, frass at entry holes, or use pheromone traps to determine when they are flying. However, pheromone traps used in small planting may make problems worse by attracting moths that lay eggs singly among the fewer plants. Small plantings result in eggs being concentrated onto fewer vines. Timing insecticides to when the eggs are hatching and the larvae are very young is the key to control. Squash Bugs Squash bugs are more likely to be a problem in squash and pumpkins.