Impatiences need to be started in early March, right after the tomatoes and peppers. A sunny front or back porch or germination stand is a good place to start seeds that need an really early start.
This germination stand has two 25 watt bulbs for heat under the shelves and two florescent bulbs on the top of the shelf for light. Linda’s husband Tim built it for her when she started gardening. When we started gardening together, it was moved to my house because It is my job to start our seeds.
After the tomatoes and peppers are off the germination stand the Impatiences go on. It can take up to 3 weeks for impatiences to come up. They don’t like heat under them and need light to germinate. The seeds should be only very slightly covered with sifted potting soil or seed starting potting mix. Seed starting potting mix is a very light potting soil and is available from Miracle-grow. I keep them under fluorescent lights. The lights are turned off at night to simulate a normal day. I have had really good results using this method. The plants are then put on the front porch until the end of May. After the last frost the flats are put out on the old stone sink, where they will be planted, to grow and harden off for a few weeks.
I plant the same variety every year, Busy Lizzie, blue pearl. It’s a great cool color for the stone sink planter on the north side of the greenhouse which is also a south west direction by the back porch. When you come out of the house on a hot summer day the first thing you see are the lilac blue Impatience or the pink and white bleeding heart that grows beside the planter.