The Trouble with Tribbles, er, Onions
My husband and I eat a lot of onions. They are practically a staple, being eaten fresh on sandwiches, subs, and burgers, and fried with meats and vegetables. So we use a lot of onions over the course of the year.
But despite repeated attempts to grow large onions, I have not had any success.
This is what this year's traditional bulbing onions look like, grown from transplants. They are usable, but much smaller than we would prefer.
This happens year after year, so it's not a one-year problem.
I see several possible causes of the small size.
1) Our back yard does not get full sun because it is shaded part of the day by trees.
2) Because I grow intensively in small beds, the onions have to be grown with 6 inches or less (usually less) of spacing.
3) Perhaps a key nutrient in the soil is in short supply.
Since tomatoes, squash, and garlic all do very well in the garden, I don't think the sunlight is the issue with the onions. I haven't tested the soil for trace elements.
My guess is the spacing is the big issue, but they only way to change that would be to plant them in my heavy clay soil outside of the fenced-in raised bed area. I have my doubts that onions will be able to handle heavy clay well, so it would probably need a lot of soil amendments to loosen it.
I would like to hear from anyone who has suggestions on growing larger bulbing onions.