I was perusing my local seedshop looking for lettuce seed and spied this. I've seen seed tape before, but never used it. The price difference wasn't much as compared to a packet of loose seeds, so I decided to give it a try.
A seed tape is nothing more than a strip of thin paper with seeds placed at specific intervals. Above, you can see three strips of seed tape. A strip is planted in a furrow where the paper softens when exposed to water and the seedlings push through it easily. With small, hard to manipulate seeds like lettuce or carrots, this makes planting simple and prevents over seeding.
Lettuce seed is planted very shallowly, so I just laid the tape on the soil and covered it by lightly sprinkling a small amount of soil over it. The tape above is half covered.