Growing Impatiens

Impatiens is a slow-growing plant, and you’ll need to start the seedlings about three months before your last spring frost. Impatiens seed germination can take up to 21 days.
 

Growing impatiens from seeds is a slow process, but a simple one. Fill each cell with a moistened commercial seed-starting mix, leaving ½ inch space between the top of the soil and the edge of the planter. Put the cells on a tray and fill the tray with water. Allow the mix to soak up water from the bottom until the top of the mix is moist. Pour the rest of the water out of the tray. Place two seeds on top of the soil in each cell and sprinkle a light dusting of mix over them. Mist the top of the cells with clear water. Cover the cells with plastic to keep in moisture, and place it in a bright spot to sprout. Once the seeds have sprouted and have produced a pair of leaves, remove the plastic and place the tray filled with cells in a sunny south window. If you don’t have a bright window available, grow the impatiens under fluorescent lights for 16 hours a day.

Optimum germination temperature is 75F. Do not exceed a soil temperature of 80F