Some gardeners call these tiny onions scallions and others call them green onions. Whatever you call them, growing these onions in a home garden is a fruitful effort that will yield a generous and delicious onion harvest a few months after planting. Plant scallions from seeds in the spring and you will soon have an abundant growth of onions that will return year after year.
Prepare a spot in a sunny area in the spring for planting. Work the soil with a garden spade down to a depth of 4 to 5 inches. Add 2 inches of compost to the top of the soil and work this in with a garden spade. Use a rake to smooth the surface of the soil to finish preparing the growing area.
Place the scallion seeds in rows in the prepared growing area, spacing each seed 3 inches apart. Make the rows approximately 1 foot apart. Cover the seeds with 1/2 inch of garden soil. Water the newly planted scallion seeds carefully.
Keep the soil moist during germination. Watch for the scallions to emerge from the soil within one to two weeks.
Harvest the green leaves growing above the soil when this vegetation is between 8 and 12 inches high. Cut the leaves several inches above the soil level. Leave the bulbs to continue growing without using during the first growing season.