Growing
Growing shallots is often most successful when you use division or small bulbs rather than seeds, as plants established from sets are generally more resistant to the onion fly. This pest is attracted to the scent of damaged plant tissue and lays eggs near the base of the stems; if left unchecked, the larvae will tunnel into your bulbs, causing them to rot and the foliage to wilt. To minimize this risk, practice diligent crop rotation and avoid thinning your plants too aggressively, which can create the wounds that attract these flies.
When preparing your garden, aim for a soil pH between 6.0 and 7.5 and ensure the ground is well-drained to prevent neck rot or white rot. If you are growing varieties like the I'itoi onion, you can plant the bulbs in the fall, placing them just below the soil surface. These plants are quite hardy and can survive light frosts, though the tops may die back during intense summer heat.
You will know it is time to harvest when the tops begin to wither. Once pulled, it is important to harvest them ready to use, as they do not continue to ripen after being picked. For long-term use, allow the bulbs to dry thoroughly and store them unwashed in a cool, dark cellar or a dry, temperature-controlled room.