If you are growing eggplant for the first time, you might be wondering how much water your plants need. There is no fixed rule for how much water eggplants require.
It all depends on the size of your plant, the weather conditions and the variety of eggplant you choose. Smaller, younger plants will need a larger amount of water than older, more mature ones. In general, one to two gallons of water per week is sufficient for the average, mature eggplant.