The white onion is a bulb that grows every two years and has blue-green, hollow, tubular leaves. The bulb may push slightly ...

There are, however, bunching varieties that produce a true bunching onion or scallion with either small or no bulbs. For dry onions from sets or plants, 100 or more days are required from planting, ...

Where possible, choose onion sets that have been heat-treated. This means their flower embryos have been killed, so they're less likely to run to seed or bolt. Generally, growing onions from sets ...