When determining the necessary average DLI for specific crops within a greenhouse, it's essential to consider several factors. Firstly, one must assess the amount of light transmitted through the greenhouse material, as this varies depending on its composition. Secondly, understanding the average light requirements for each crop is crucial. This varies significantly among different plants; for instance, high-light crops like cannabis require higher DLIs, typically ranging from 1,000 to 1,500. On the other hand, crops such as tomatoes generally thrive in DLIs around 500-600. At the lower end of the spectrum, leafy greens like lettuce may only need DLIs ranging from 50 to 250. It's vital to match the DLI requirements of the crops with the available light levels in the greenhouse. If crop rotations occur throughout the year, prioritizing high-light crops ensures optimal growth conditions. By understanding the specific light level needs of various crops, greenhouse owners can determine the ideal DLI for each, contributing to their successful cultivation.