Hi, new to this forum with a question that's been bugging me for years.

I have a modest 5x12 raised bed garden in my backyard. It's been up and running 4 years and every year I have the same problem.

ANY veggies that grow downward (onions, garlic, carrots) do terrible in my garden. For example: my regular size onions don't get any bigger than a small scallion.

The soil is fairly new and not hard at all. I use an organic fertilizer in the spring, I compost, water well, and get about 10 hours of sun a day on the garden. I'm at the point now to where I think I need to add soil additives (bone meal?) to stimulate growth.

Any ideas?

Thanks!