Vertical farming with turnips on aeroponic towers. The reason why we won’t grow turnips again is that root vegetables such as turnips primarily develop beneath the soil’s surface. Aeroponic towers, designed for soilless growth, may not provide the ideal environment for these particular crops. The root vegetables can quickly outgrow the confined growing ports, limiting their ability to achieve their full growth potential. This also applies to onions, potatoes, radishes, beets, garlic, and carrots