50 Insect Spray Leafhoppers Lettuce, potatoes, beans, carrots, celery, general feeders Piercing and sucking insects that may need weekly applications for control. Most frequently recommended controls are Malathion Spray or Sevin Garden Dust.
Leafhoppers feed on blossoms of beans and cause a poor pod set.
White Flies Tomatoes, beans, and many more Get at them at the first sign. Nymphs do the most damage. Use Malathion Spray and be sure to thoroughly cover the underside of the leaves. Spraying 4 times at weekly intervals may be necessary to clean them out. Cabbage Looper Broccoli, Brussel Sprouts Spray or dust on appearance and apply weekly as needed.