This is how we grow 18 zucchini plants vertically on an aeroponic tower 1. Planting Strategy: Zucchini plants develop large leaves and extensive root systems, so it's important not to overcrowd them. We plant only 2 zucchini plants per section on opposite sides of the tower, for a total of 18 plants per tower. We also install a grow cage to support the plants and keep the heavy foliage under control as they mature. 2. Seedlings: Zucchini seeds germinate very quickly. We place one seed per Rockwool cube, and within just two weeks, the seedlings will have developed their first two true leaves, an indicator that they are ready for transplanting. 3. Nutrients: A submersible pump located in the bottom reservoir intermittently irrigates the roots for a total of 4.8 hours per day. This nutrient-rich solution supplies all the essential minerals and trace elements the zucchini plants need for healthy growth and high yields. 4. Powdery Mildew: The biggest challenge we face when growing zucchini ...