For best results, its most ideal to grow leafy vegetables on a separate Easygro Stele the one used and your fruiting & flowering plants on another. Leafy vegetables like the lettuce & the spinach require nitrogen in higher quantities, while the fruiting & flowering plants require higher amounts of Phosphorous & Potassium during their flowering/ fruiting stages. For best results, it is better to grow one type at a time or have them grow on separate Easygro Stele modules.