Before planting seedlings in your raised bed or grow box , there are several important factors to consider: 1. Which types of crops are most suitable for a raised bed or grow box. 2. What spacing is necessary for these crops. 3. How do you select the healthiest seedlings for transplanting into the raised bed or grow box . 1. Crops that are best suited for a raised bed or grow box Crops that are best suited for a raised bed built from a single concrete block (8 inches or 20 cm in height) are typically shallow-rooted or short-term varieties. If you want to plant deep-rooted crops, you can easily create a deeper raisednbed by stacking the blocks on top of each other. 2. Plant Spacing When planting seedlings in your raised bed, spacing is important. Spacing applies to both the distance between plants in a row and the distance between rows of plants. I mportance of Plant Spacing Adequate spacing is essential f...