Calla Lilies are perennials that bloom in the spring. They can be used indoors for air purification. Package of 100 seeds.
To sow seeds:
Submerge seeds in a bowl of warm tap water and allow to soak for 8 hours.
Fill 3-inch seedling pots with a standard potting mixture and set the pots in a drip tray. Sow the calla lily seeds on the soil surface and press them into the soil so the top of the seed is just barely exposed. Pour about one inch of water in the drip tray.
Cover the pot with a clear plastic bag to retain the moisture in the soil and air as the seed germinates. Set the pots in a place where the seeds will get bright, indirect light and keep temperature at 70 to 75 degrees Fahrenheit.
Don't allow the soil to dry out. Once the seeds sprout, remove from plastic bag. Germination can take between one and three months. Move seedlings to a place that receives six to eight hours of direct sunlight. Water when the soil surface dries.
Transplant the plant into a 6-inch pot after the seedling produces its second set of true leaves. Plant it at the same depth it was growing at previously. Choose an acidic potting mix, such as one formulated for azaleas.