They just planted a couple weeks ago ... we plow crops under in the fall, not spring ... getting a little ahead of yourself? ...
You've clearly never planted any vegetables. It's May 1. Much of California and southern areas of the country have been frost free for 2 months - that's 60 days for those on the left. Seed to picking, many varieties of lettuce are 40 to 60 days. Carrots, as soon as 30 to 40 days for baby carrots.
Peaches, grapes, almonds, cherries and walnuts take 5 to 10 years to start producing ... and these orchards produce for up to 50 years ... tomatoes, cucumbers, corn all have many months yet to harvest ... if you've lived in the California Central Valley, then you know the wide variety of things that are grown there ...
There's a little part of California called the Imperial Valley ... this is year-round growing conditions for lettuce and the like and where we get some of our fresh vegetables during the winter months (there and Chile) ... farmers there would have already plowed just as an after-harvest chore, the concern is whether it's worth planting again if there's no market in 60 days ... remember the lyrics?:
Call any vegetable
Call it by name
Call one today
When you get off the train
Call any vegetable
And the chances are good
Ooooh! The vegetable
Will respond to you