Use on all herbs and vegetables such as:
Hardy (cool season) crops:
Broccoli
Brussels sprouts
Cabbage
Collards
English peas
Kale
Kohlrabi
Leeks
Mustard greens
Parsley
Radish
Spinach
Turnip
Semi-hardy crops for early spring or fall:
Beets
Carrot
Cauliflower
Celery
Chinese cabbage
Endive
Potatoes
Lettuce
Radicchio
Rutabaga
Salsify
Swiss chard
Summer crops (Plant after danger of frost):
Beans
Corn
Cucumber
Eggplant
Melons
Okra
Peppers
Pumpkins
Summer squash
Sweet potatoes
Tomatoes