What you do is save some carrots from the previous harvest year. I stored mine in a plastic grocery bag that I loosely tied shut so they would still get some air. You don't want it completely sealed or they might rot. You keep them in a cool place - I kept mine in the extra fridge downstairs. This is what they looked like this spring.
I dug a trench at the end of a flower-saving garden in the back yard.
I stuck the carrots in the trench.
Then I covered them up to the top of the carrot.
The carrot blossoms are supposed to be a bee magnet. We will see what happens as summer progresses and keep you informed.