In horticulture and landscaping, liners are materials acting as a barrier in the soil. Liners can be made of plastic, fabric, cardboard, wood, etc. The intention of installing liners in gardens differ from gardener to gardener.
To calculate the number of seeds for each 1-square-foot section, divide the length and width of the section by the seed spacing number. The length of a 1-square-foot section is 12 inches and the width is also 12 inches.
Instead of using raised beds, you may decide to plant in rows. If you decide on this, it is understandable. Row planting allows the plants to get more sunlight and the garden is more organized.