Seed tape has been available in stores for quite some time. It is nothing new, but it is generally more expensive than simple packets of seeds. It makes planting easier than ever since the seeds are evenly spaced. All that it takes is positioning the material and keeping it properly watered and tended as the plants develop and grow. You can save a considerable amount of money with homemade varieties rather than store-bought kits, and it particularly handy when planting very small seeds. Use these easy ways to make homemade seed tape, and create perfectly spaced plants instead of starting them indoors or guessing where they will pop up.
Some people create homemade seed tape using toilet paper, but it tears far too easily. My grandmother and I preferred to make ours with crepe paper streamers. In addition to cheap white streamers you will need seeds of your choice, ½ of a tablespoons of cornstarch, ½ cup of water, a cotton swab or small craft brush, a yardstick or measuring tape, a pencil and a saucepan for creating the natural glue. You will also need plenty of table space or floor space to create yards of homemade seed tape. Be sure to save the seed packets for planting and care instructions. Not all seeds require the same soil depth, water or care.
Begin by combining the water with the cornstarch in a small cup. It will be easier to work out the lumps if it is in a small container. Pour the smooth mixture into a saucepan, and heat it while occasionally stirring until it begins to boil. Once it boils, remove it from the heat. As it cools it will thicken to a natural paste.
In the meantime, layout the streamers on a clean smooth surface. Using a pencil, mark the points where the seeds should be attached. Mark the center of one half of each streamer. It will be folded over when all of the seeds are attached. Consult the seed packet for recommendations. Proper spacing is very important!
After the cornstarch glue is completely cool, apply a drop and a single seed until all of the pencil marks are covered. Carefully fold over the streamer to create the homemade seed tape. Allow the cornstarch glue to dry completely before rolling up the seed tape or placing it in the garden or flowerbed. In any case, the soil should be well-worked, and the seeds should be planted at the proper depth and watered according to packet directions. Take the time to do it right and you will achieve a beautifully spaced garden or flowerbed.
Source: Grandmother, Bonnie Bliznik