Broccoli
Symptom Cause  
Leaves Turn Yellow And cup downward
Aphids
>
Yellow Flowers Appear Before heads form
Bolting
>
Plant Forms Very Small Or No Heads
Buttoning
>
Holes In Leaves
Cabbage Loopers
>
White Butterflies; Ragged holes in leaves, green excrement On leaves
Cabbage Worms
>
Holes In Leaves
Caterpillars
>
Seedlings Cut Off At Soil
Cutworms
>
Plants Disappear All Or In Part
Deer
>
White Powder On Leaf Undersides; Foliage Wilts
Downy Mildew
>
Leaves have numerous small holes close together; Plant Weakens
Flea Beetles
>
Plants Disappear All Or In Part
Rabbits
>
Plants Disappear All Or In Part
Woodchucks
>