Heavy soakings at weekly intervals are better than many light soakings as light, frequent waterings promote shallow root systems. Mulching will reduce water loss from the soil. Weed Control Weeds compete with eggplants for sunlight, nutrients and water. In the average home garden, weeds are best controlled when small with cultivation or mulches. In large plantings, herbicides can be used.
Mulches help keep weeds down, reduce water loss and stabilize soil temperatures.
Inorganic mulches, such as polyethylene and aluminum, are available in many garden stores. Organic mulches, such as straw, leaves or grass clippings, can also be used. Organic mulches should be at least 2 inches, and preferably 3 to 4 inches, deep. Mulching too early in the season with organic mulches will keep the soil cool, resulting in slow growth, poor fruit set, and shallow rooting. Harvesting Eggplant fruits are harvested from the time they are one-third grown to full size.