One technique we can use

One technique we can use is called nicking.To do this, we make a small cut or scratch into the seed coat.Be careful not to cut too deep!
You don't want to damage the plant embryo inside.Another way is to file down the seed coat using sandpaper or a nail file.Once again, you don't want to file too much,just enough to wear down some of the seed coat.After applying either of these methods, you'll want to spray the seeds with bleach to prevent mold.