The tomato pinworm is also present in most crops. There are also low levels of leaf miners and western flower thrips. A bacterial disease problem has also been detected in one operation. The major insect pest problem is the greenhouse whitefly which has infested many fall crops and infected plants with the Pseudo yellows virus. Most crops also have powdery mildew for which some growers have cultivated a few powdery mildew tolerant varieties.
Older crops have some fruit losses due to gummy stem blight and anthracnose.
Several crops have shown symptoms of cucumber necrotic spot virus. There have also been a few cases of bacterial wilt infected plants. There has been some fruit damage due to European Corn Borer infestation. Green peach aphids have been observed in some crops and biological controls are generally successful in suppressing their population. Spider mites are not very visible likely because many have entered diapause.