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

and the plant needs the extra space. Getting this head start on spring is only possible with seeds. If you were to try to start an onion set indoors, it would begin growing the bulb instead of just ...

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 ...

For onion sets: Dig a small hole or furrow in the ... Thin the seedlings when they are a few inches tall to achieve the desired spacing. After planting, water the onions thoroughly to settle ...

Add some alfalfa pellets to boost nitrogen levels. Plant onion sets no more than one inch deep, spacing them two to six inches apart in rows. Onions need a lot of water to swell in size so keep ...