How to plant green onion?
Green onions are easy to grow from sets. Sets are small onion bulbs. Plant the onion sets in late March or early April. Sort the sets into two sizes–those larger than a dime and those smaller than a dime. Use the larger sets for green onions. You can use the smaller sets to grow dry onions like the kind you would use to put on your hamburger. To grow green onions, plant the larger sets 1 1/2 inches deep and close enough so they are touching each other. Keep onions weed free! To grow nice, long, white stems for green onions, hill the row by pulling the loose soil toward the onions with a hoe when the tops are 4 inches tall For green onions, pull them out of the ground when the leaves are 8 to 10 inches tall.