Sow the large, black borage seeds directly into the garden two weeks before the last frost date. Trowel a trench 1/2 inch deep. Plant the seeds 1/2 inch deep at least 6 inches apart. Water the soil until the seeds are soaked. After germination, in about a week, water the plants when the soil dries out.
Pull the entire plant up at the end of the season. Cut off the flower heads before tossing the plant onto the compost pile. This will reduce the number of borage seedlings that emerge the following spring.
Weed out excess borage sprouts from your garden every spring before they get too big and go to seed again.