“I'd improve my vegetables in flats which has a cell depth of about two inches,” Tan states. “But I'd improve indigenous prairie plants in the cell with a depth of about six inches to permit more room for the roots to expand.” The optimum depth for just a seed tray https://lt1102in8pbf09752.onesmablog.com/vegetable-and-flower-seedling-seeder-no-further-a-mystery-66681238