Propagating new plants from seeds is known as sexual reproduction, and for some plants, this is the only method that can be used. Propagation by seed is also a preferred method for gardeners in cold climates to get a head start on the growing season, as seeds planted indoors in the winter will sprout in time for spring planting. You can start seeds in almost any type of container, including Dixie bathroom cups.
Create six to eight drainage holes in the bottom of the Dixie cup using a sharp object such as a pencil.
Pour the seeding mixture to within 1/4 inch of the rim of the cup.
Place the Dixie cups in a shallow tray or baking pan. Pour in enough water to reach halfway up the sides of the cups. Allow the cups to soak in the water until the surface of the seeding mix is moist. Remove the cups and allow them to drain completely.
Sow the seed according to the instructions on the seed package. Large seeds are generally sown deeper than small seeds.
Cover each cup with plastic wrap and place them in the amount of light suggested on the seed package. Remove the plastic when the seeds sprout.