Castor Bean
Symptom Cause  
Holes chewed in leaves and buds
Corn Earworms
Trails marks left inside leaves, leaves are blistered and blotchy
Leaf Miners
Pale spots on foliage
Potato Leafhoppers
Holes appear in leaves and buds
Southern Armyworms
Leaves stippled/yellow/bronze, dry out and drop, visible webbing and galls form
Spider Mites
Spins light webbing, feeds on under side of leaves