Save your egg cartons for the garden! Using egg cartons to plant seeds or seedlings is a cheap and effective way to get your herbs, flowers, or plants off to great start.
Find a place in your garden where you would like to plant your seed or seedlings. Dig a hole the height of your egg carton. If you are planting your seeds directly in your egg carton, place your carton in a nice place on your balcony or in your house.
A cotton filter maybe added to the bottom of the egg carton to help retain moisture. You can get fancy and cut your egg carton into two's and plant them around your garden. See picture
Water your seeds and watch them grow.