This large, green worm with a horn or projection on its tail will eat large amounts of tomato or foliage. Use Sevin or Dipel for control. Weed Spray Damage Phenoxy herbicides such as 2,4-D in very small quantities may cause twisting and distortion of tomato stems and leaves. Avoid the use of these sprays close to your garden and do not allow wind to drift vapors or spray onto your plants. Plants will usually return to normal after several weeks if the weed spray was not too severe.
Death can occur with heavy sprays.