I grow a certain species of bitterroot as a border for my rock garden, Lewisia howellii. This plant has beautiful rosy-pink flowers on stems about 8 inches long.
I started my seeds indoors because it can take up to month for the seeds to germinate. This way they plants were ready to go outdoors when the warmer days of spring arrived.
The plants are perennials in my area, but I don't know if this is true of all regions. If not, you'd have to start new seeds each year and replant the bitterroot where you want it to grow.