Wild raspberries in the area should also be destroyed. Diseased plants in the field should be removed and destroyed. Aphids should also be controlled. Verticillium wilt is a soil-borne fungus that can be a problem in some areas of New Mexico. Leaves on infected plants turn yellow and eventually die.
Canes often turn blue as the disease proceeds up the canes.
Vascular tissues generally exhibit red discolorations. Raspberries should not be planted in soils that have been planted to potatoes, tomatoes, peppers, eggplant, strawberries, or other cane berries that have been infected with wilt in previous years. Infected plants should be removed from the field and burned. All fields should be tested for nematode problems before planting. Typically, nematodes are a greater problem on sandy soils than on heavier soils.