4 TBSP water beads. They need to soak for approx. 24 hours (may be played with during the growing stage; its fun to watch your baby water beads grow up). You may reuse beads at home, they will dehydrate into their small shape. They are non-toxic and break down into soil nutrients so putting them in your garden is good! A little goes a long way. Try one to two tablespoons at a time!