Lotus plants not only produce beautiful flowers but have been considered sacred in many cultures. The lotus can be difficult to grow from seed because of the seed's hard layers. In the wild, new plants often spring from tubers rather than seeds. The seed can remain viable for up to 200 years and can be grown at home if you prepare the seed so water can permeate it.
Use your utility knife to cut into the side of seed shell. Cut close to the bottom near the dimpled end of the seed.
Use a file to scour the side of the seed once you've broken through the shell. Rub the file over the area until you see the cream-colored flesh beneath. Do not puncture the flesh.
Fill your clear plastic cup with warm water and place your seed inside. Set it in a location that remains between 70 to 90 degrees F.
Check the water in your cup each day. Change the water and rinse out the cup to keep it from getting cloudy. The seed should swell and germinate within a month.
Choose a pot with at least an 8-inch diameter that has no drainage. Fill your pot with heavy or clay loam soil. Put about 3 inches of soil in the pot.
Place the germinated seed on top of the soil and place a layer of aquarium pebbles over the seed.
Place the pot in your aquarium and fill with water until the water level is 4 inches above the pot. Use warm water and set the aquarium temperature at about 72 degrees F.
Add a water-soluble fertilizer once the fourth leaf begins to develop. Repeat application every two weeks.