Size: Leaves are up to a foot long.
Sunlight requirements: Full sun.
Water requirements: Water evenly; more water equals stronger flavor; average 1 inch per week.
Soil requirements: Well-drained soil.
When to plant: Spring, when soil is 50 degrees Fahrenheit.
Where to plant: In raised beds; 1/2 inch apart in rows 12 to 18 inches apart; do not grow where onions have grown within the past three years.
When to harvest: When tops are about 6 inches tall.
Produce storage: Put 1 inch of cold water into a glass jar. Put scallions in jar; cover tops of scallions with a plastic bag and store in the refrigerator.