Decide what you want to grow and show at the fair. You will be asked to submit a group of fruits or vegetables as closely alike as possible in color, shape and size.
Judges prefer uniformity.
Entries should be free of blemishes. Do not enter produce scarred by garden pests. Discard vegetables marred by disease, rough handling or careless cultivation. Select normal-sized vegetables that are ready to be consumed or cooked, at their best and most flavorful. Just go look at what is sold in the grocery stores and then pick your produce for contests accordingly.