Kay I don't know what part of OK you are in but I'm in northeast Texas 30 miles south of the Red River. I grew eggplant for the first time last year. I transplanted plants from on-line nursery. They grew but not one made. I knew others in different areas of northeast TX who planted eggplants and they all failed. We all decided it was not a good year for eggplants.
Following info from Neil Sperry's Complete Guide to Texas Gardening 1982:
Eggplant grows best once the soil is warm. Loose garden soil containing a good portion of organic matter is best, as is a sunny location. Fertilize eggplant monthly with a high-phosphate garden fertilizer. Keep the plants well watered to prevent off-flavored fruit.
Sara~~~ FarmGirl Sister #6034 8/25/14 FarmGirl of the Month Sept 2015. & Feb 2019
Lord put your arm around my shoulders and your hand over my mouth.