Onions produced from sets or transplants should be started in March. They can be grown in a garden spot or 5-gallon containers. Let’s focus on fall planting using onion seed.

Since onions grow underground, you have to rely on other cues to determine when they're ready to harvest. Here's ...

Q: I would like to plant onions, but I’m not sure how to get started. Is it too late to plant? I read online that they should be planted in the summer for the following year. A: In Northern ...

Now seeds on the other hand are going to give you a much wider selection to pick from. That is another drawback with the sets - not many onions will let you stop the growing action in year one and ...

When planting, space rows 12 to 15 inches apart with plants 4 to 6 inches apart when grown for mature storage onions, and closer (1 inch apart) when grown for green onions.

Most onions grown in Oregon are long-day onions. They make top, green growth until a critical day length is reached, which triggers bulbing. That generally begins at about 14 hours of light per day.