I started off 16 years ago with three bulbs of California White from one of the local hippie food stores. They were about half the size of the bulb pictured below. I saved back the best bulbs for planting and now almost every bulb comes out near the size of a baseball.
Not much more than what you do for planting your rows.
digging the trenches is a lot of work, but adding the bone meal and fertilizer etc isn’t.
Then I bury them as as I do a row, I put down landscape fabric and do the next one.
It’s such an easy way to keep the weeds down.