Can beets be grown from a beet that has sprouted?
Can Beets Be Grown From a Beet That Has Sprouted?
Certified GKH Gardening Expert
Beet tops are alot like carrot tops. You can plant them to get seeds, which you can then replant to get full grown beets, but they will not properly grow into beet roots again.
This article give instructions on how to grow carrot tops, but the process is the same for beet tops: