by Greg Green
Most seeds that fail to start germinating do so because their shell is too hard to break open and allow water to seep in. At the end of your germination period you may have found that 25% or more of your seeds have not managed to pop out. You can help these seeds to grow by using a method known as Scuffing.
Simply get a small box, like a matchbox. Line the inside of the box with sandpaper. Place the seeds into the box. Cover the seeds with more sandpaper. Close the box and shake the seeds in the box for a few minutes. Now the seeds are scuffed and their outer shell should be easier to pop open. Plant these seeds in soil and they should be able to germinate.